Compare Logitech MX Master 4 vs Logitech Signature Comfort Plus M850 L

Logitech MX Master 4

Battery life is repeatedly praised as excellent, with reviewers reporting weeks of daily use and very little charge loss. Quick top-ups further reduce the chance of being interrupted by a dead mouse.

13 supporting reviews

Logitech Signature Comfort Plus M850 L

Battery life is a major strength. Reviewers repeatedly praise the long runtime from a single replaceable cell, with short-term testing showing very slow drain.

7 supporting reviews

Logitech MX Master 4

The rechargeable design is easy to live with because the battery lasts for weeks and can be topped up over USB-C while the mouse is still in use.

2 supporting reviews

Logitech Signature Comfort Plus M850 L

The lack of a built-in rechargeable battery disappoints some reviewers, especially those concerned about disposable-cell waste.

2 supporting reviews

Logitech MX Master 4

The home-replaceable battery is praised as a meaningful longevity improvement and helps counter the usual disposable feel of sealed wireless mice.

1 supporting review · Limited evidence

Logitech Signature Comfort Plus M850 L

The replaceable cell is easy to swap, and one reviewer liked avoiding the long-term wear associated with built-in batteries.

1 supporting review · Limited evidence

Logitech MX Master 4

Opinions on wireless latency are mixed and depend heavily on workflow, preferences, or how deeply the mouse is customized.

7 supporting reviews · Mixed evidence

Logitech Signature Comfort Plus M850 L

Bluetooth responsiveness was excellent in one test, with no noticeable input lag or latency during productivity use.

1 supporting review · Limited evidence

Logitech MX Master 4

Integration with Logi Options+, Flow, Adobe tools, and Logitech’s broader ecosystem can make the mouse unusually powerful for multi-device creative work. Plugin coverage is still uneven.

6 supporting reviews · Mixed evidence

Logitech Signature Comfort Plus M850 L

Logitech Flow worked smoothly in testing, allowing text to move between two computers without manually changing Bluetooth sources.

1 supporting review · Limited evidence

Logitech MX Master 4

The horizontal thumb wheel is widely appreciated for timelines, spreadsheets, and large canvases. A minority find it slow, imprecise, or hard to work into established habits.

11 supporting reviews

Logitech Signature Comfort Plus M850 L

Side scrolling is possible through a button-and-wheel combination, but the workaround is less convenient than a true tilt wheel.

1 supporting review · Limited evidence

Logitech MX Master 4

The lack of onboard profile memory frustrates power users who want custom mappings to travel with the mouse without relying on Logi Options+ on every computer.

2 supporting reviews

Logitech Signature Comfort Plus M850 L

The lack of onboard memory is a meaningful limitation because customizations cannot travel with the mouse without Logitech software installed.

1 supporting review · Limited evidence

Logitech MX Master 4

Reviewers welcome the recycled plastics, low-carbon aluminum, recycled cobalt, and more recyclable construction. Sustainability is treated as a positive extra rather than the primary reason to buy.

1 supporting review · Limited evidence

Logitech Signature Comfort Plus M850 L

Recycled plastics and paper-based packaging are welcome sustainability touches, although the broader battery design still uses disposable cells.

2 supporting reviews

Logitech MX Master 4

Opinions on 2.4GHz connectivity are mixed and depend heavily on workflow, preferences, or how deeply the mouse is customized.

3 supporting reviews

Logitech Signature Comfort Plus M850 L

The standard package draws criticism for leaving out a 2.4GHz receiver, so buyers who want dongle-based wireless may need an extra purchase.

2 supporting reviews

Logitech MX Master 4

Reviewers praise the easier-to-disassemble construction and home-replaceable battery as a meaningful repairability improvement. Switch-level repairs may still require professional work.

8 supporting reviews

Logitech Signature Comfort Plus M850 L

A teardown found the mouse fairly simple to disassemble, making cleaning or basic part replacement approachable.

1 supporting review · Limited evidence

Logitech MX Master 4

MagSpeed free-spin scrolling is repeatedly praised for flying through long pages, spreadsheets, and timelines while retaining control. It is a signature feature many reviewers would not want to give up.

5 supporting reviews

Logitech Signature Comfort Plus M850 L

Adaptive fast scrolling is a productivity highlight, making long spreadsheets, documents, and message lists much faster to navigate without manual mode switching.

4 supporting reviews

Logitech MX Master 4

The roughly 150-gram body feels substantial and stable to some reviewers, but weight is one of the most common complaints. It hurts portability and makes fast gaming movements feel sluggish.

10 supporting reviews

Logitech Signature Comfort Plus M850 L

The mouse is on the heavier side, but several reviewers like the substantial feel and find the weight manageable; lightweight-mouse fans may disagree.

4 supporting reviews

Logitech MX Master 4

The large, heavy body is repeatedly described as a desk-first design rather than a travel mouse. Some reviewers still carry it, but compact-mouse users will find it cumbersome.

7 supporting reviews

Logitech Signature Comfort Plus M850 L

The high-backed, larger design is better suited to a desk than travel, with reviewers calling it bulky and discouraging it for trips.

2 supporting reviews

Logitech MX Master 4

Reviewers praise the main wheel for combining fast navigation with precise stopping and controlled ratcheting. Minor looseness at high speed is the main reservation.

8 supporting reviews

Logitech Signature Comfort Plus M850 L

The wheel was praised as precise and satisfying, even if it does not match Logitech's premium magnetic wheel.

1 supporting review · Limited evidence

Logitech MX Master 4

The 8,000-DPI ceiling is considered ample for productivity and high-resolution displays. Reviewers rarely see a need for more unless the mouse is being judged against gaming hardware.

12 supporting reviews

Logitech Signature Comfort Plus M850 L

The 4,000-DPI ceiling is more than sufficient for fast productivity work, even if it is not aimed at serious gaming.

1 supporting review · Limited evidence

Logitech MX Master 4

Switching among paired devices is repeatedly described as easy and useful for multi-computer desks. Flow and Action Ring shortcuts can make multi-device workflows even faster, though Flow itself can be clunky.

1 supporting review · Limited evidence

Logitech Signature Comfort Plus M850 L

Switching among paired devices is consistently easy and convenient, with reviewers moving between computers without hiccups.

4 supporting reviews

Logitech MX Master 4

Reviewers value smooth use across Windows and macOS, especially with Flow and multi-device pairing. Cross-platform file transfer can still be hit-or-miss.

2 supporting reviews

Logitech Signature Comfort Plus M850 L

Broad operating-system support makes the mouse a versatile choice for people who switch among Windows, macOS, and other platforms.

1 supporting review · Limited evidence

Logitech MX Master 4

The MagSpeed wheel is one of the most celebrated parts of the mouse, combining controlled ratcheting with fast free-spinning navigation. A few reviewers noted minor looseness or long-term durability concerns.

17 supporting reviews

Logitech Signature Comfort Plus M850 L

SmartWheel is generally a standout productivity feature for quick, adaptive scrolling, though one reviewer found it less refined than Logitech's premium wheels.

5 supporting reviews

Logitech MX Master 4

The primary clicks are widely praised for being soft, quiet, and satisfying without feeling mushy. Several reviewers consider them an improvement over earlier MX Master models.

12 supporting reviews

Logitech Signature Comfort Plus M850 L

The main clicks feel tactile without requiring much force, giving good feedback while remaining quiet.

1 supporting review · Limited evidence

Logitech MX Master 4

The 125 Hz polling rate is acceptable for productivity but widely viewed as dated and limiting for fast gaming. Several reviewers explicitly wished Logitech had raised it.

9 supporting reviews · Mixed evidence

Logitech Signature Comfort Plus M850 L

The office-level polling rate is adequate for productivity but can look choppy to sensitive users and is too slow for competitive gaming.

2 supporting reviews

Logitech MX Master 4

Most reviewers report stable wireless use without dropouts or interference. Isolated software and Universal Control problems keep the experience from being universally trouble-free.

6 supporting reviews · Mixed evidence

Logitech Signature Comfort Plus M850 L

Wireless stability is generally good, including hiccup-free Bluetooth testing, although one reviewer found Bolt more reliable and sensitive to obstructions.

2 supporting reviews · Mixed evidence

Logitech MX Master 4

Despite its weight, the widened feet and smooth skates let the mouse glide easily and predictably across desks. This helps preserve precise control in normal work.

14 supporting reviews

Logitech Signature Comfort Plus M850 L

Most reviewers found the mouse smooth or effortless across surfaces, but one reported noticeably choppy, rougher-than-expected movement.

4 supporting reviews · Mixed evidence

Logitech MX Master 4

Casual and slower-paced games are workable, but reviewers repeatedly warn that the weight and 125 Hz polling rate make this a poor fit for competitive or twitch-heavy gaming.

24 supporting reviews · Mixed evidence

Logitech Signature Comfort Plus M850 L

The mouse is fine for occasional or casual games, but its office-focused polling and sensor setup are not suited to competitive play.

2 supporting reviews

Logitech MX Master 4

Reviewers repeatedly report reliable tracking on difficult surfaces such as wood and glass, making a mouse pad largely optional.

5 supporting reviews

Logitech Signature Comfort Plus M850 L

The mouse works well across many surfaces in most testing, including desks, pads, glass, and rubber mats, though one reviewer found movement rough on both a pad and tabletop.

3 supporting reviews · Mixed evidence

Logitech MX Master 4

The quiet switches are widely praised for a soft, satisfying action suited to shared workspaces rather than a sharp gaming-style click.

7 supporting reviews

Logitech Signature Comfort Plus M850 L

Button feel is generally positive, with distinct side-button feedback, though the softer main-switch actuation can feel unusual at first.

2 supporting reviews

Logitech MX Master 4

Button remapping is a major strength, with extensive per-app assignments and workflow-specific controls. The payoff is highest for users willing to spend time configuring the mouse.

7 supporting reviews

Logitech Signature Comfort Plus M850 L

Logi Options+ gives the mouse extensive shortcut and button remapping flexibility, including app-specific functions and Actions Ring controls that can meaningfully streamline work.

7 supporting reviews

Logitech MX Master 4

Side buttons are usually considered easy to find and useful, especially after Logitech separated or repositioned them. Some reviewers needed time to adapt or found the spacing imperfect.

6 supporting reviews

Logitech Signature Comfort Plus M850 L

The side buttons have distinct, reassuring tactile feedback and are easy to recognize by feel.

1 supporting review · Limited evidence

Logitech MX Master 4

Logi Options+ unlocks deep remapping, app profiles, haptics, and workflow tools, which many reviewers value. The app is also a recurring pain point because of setup problems, resource use, occasional instability, and dependence for advanced features.

24 supporting reviews

Logitech Signature Comfort Plus M850 L

Logi Options+ is a major strength, adding flexible shortcuts, Actions Ring features, and productivity tools that reviewers found highly useful.

4 supporting reviews

Logitech MX Master 4

Pointer sensitivity can be tuned broadly in Options+, including fine DPI steps and workflow-specific settings. Reviewers value the ability to dial in precision for editing.

1 supporting review · Limited evidence

Logitech Signature Comfort Plus M850 L

DPI control is inconsistent: one reviewer criticized the lack of sensor-DPI adjustment in Logi Options+, while another liked the two selectable DPI levels.

2 supporting reviews · Mixed evidence

Logitech MX Master 4

Button placement is usually praised as easy to reach and improved over older models, though a few reviewers needed time to adapt to shifted side controls or disliked the gesture-button position.

7 supporting reviews

Logitech Signature Comfort Plus M850 L

Most controls are easy to reach and identify, but the Actions Ring button drew criticism for sitting too close to the scroll wheel.

2 supporting reviews · Mixed evidence

Logitech MX Master 4

Bluetooth pairing is generally straightforward and reliable, including on Macs where several reviewers used it without the Bolt receiver. Some users still prefer the receiver for maximum consistency.

15 supporting reviews

Logitech Signature Comfort Plus M850 L

Bluetooth is considered perfectly adequate for typical home use, though one comparison found a Bolt connection more dependable.

1 supporting review · Limited evidence

Logitech MX Master 4

Options+ can be intuitive for basic remapping, but deeper workflow setup is not universally simple. Several reviewers find the configuration process clunky, limited, or more involved than a mouse should require.

4 supporting reviews

Logitech Signature Comfort Plus M850 L

Logi Options+ is praised as clean and intuitive, though some advanced features require a few minutes of setup before they become useful.

2 supporting reviews

Logitech MX Master 4

The 8,000-DPI Darkfield sensor is consistently praised for accurate tracking and excellent surface versatility. It is more than sufficient for productivity even if gaming specs have moved far beyond it.

10 supporting reviews

Logitech Signature Comfort Plus M850 L

The sensor handles normal productivity tasks adequately, but one reviewer considered the underlying hardware basic for the price.

1 supporting review · Limited evidence

Logitech MX Master 4

Reviewers consistently describe the mouse as a productivity powerhouse, especially for editing, spreadsheets, office work, and repetitive workflows. Its programmable controls can meaningfully reduce keyboard trips once configured.

38 supporting reviews

Logitech Signature Comfort Plus M850 L

Productivity is a major strength thanks to comfortable operation, customizable shortcuts, adaptive scrolling, and reliable everyday performance.

8 supporting reviews

Logitech MX Master 4

Near-silent primary clicks are one of the most consistently praised refinements, especially for offices and shared rooms. Secondary and wheel clicks can still be noticeably louder.

27 supporting reviews

Logitech Signature Comfort Plus M850 L

Quiet clicking is one of the most consistent wins. The main buttons are repeatedly described as barely audible or pleasantly subdued for office use.

6 supporting reviews

Logitech MX Master 4

Materials generally feel solid and premium, with the new textured plastics praised for better aging and stain resistance. Some reviewers still prefer the softer feel of the previous rubberized shell.

34 supporting reviews

Logitech Signature Comfort Plus M850 L

The plastic construction feels notably high quality and contributes to a sturdy, substantial impression.

1 supporting review · Limited evidence

Logitech MX Master 4

The sculpted body and thumb rest create a secure, relaxed grip for many reviewers. The fit is less convincing for people who prefer vertical or much smaller mice.

6 supporting reviews

Logitech Signature Comfort Plus M850 L

Rubberized, textured side grips receive strong praise for keeping the hand secure and the thumb comfortable.

6 supporting reviews

Logitech MX Master 4

Build quality is widely described as sturdy, precise, and premium. A few isolated quality-control blemishes prevent a completely flawless consensus.

12 supporting reviews

Logitech Signature Comfort Plus M850 L

Build quality is consistently strong, with reviewers describing the chassis as solid, sturdy, well-built, and free of creaks or flex.

4 supporting reviews

Logitech MX Master 4

Most reviewers like the refined, modern appearance and desk presence, though the large sculpted styling is not universally attractive.

13 supporting reviews

Logitech Signature Comfort Plus M850 L

The restrained, contemporary styling earns consistent praise, with the Graphite finish in particular described as fantastic and understated.

3 supporting reviews

Logitech MX Master 4

The supportive shape is repeatedly praised for staying comfortable through long workdays and editing sessions. Size, weight, and personal grip preference can still make it less suitable for some hands.

4 supporting reviews

Logitech Signature Comfort Plus M850 L

Long-session comfort is generally excellent, with multiple reviewers reporting comfortable all-day or eight-to-ten-hour use; the main dissent centers on whether the cushion itself deserves credit.

6 supporting reviews

Logitech MX Master 4

The MX Master 4 is a large mouse, which suits many medium-to-large hands but can feel bulky or oversized to others. Its size is a recurring tradeoff alongside its ergonomic support.

14 supporting reviews

Logitech Signature Comfort Plus M850 L

Sizing is somewhat subjective: one reviewer found it just right and another ideal for small-to-medium hands, while a large-handed reviewer wanted a longer body.

3 supporting reviews · Mixed evidence

Logitech MX Master 4

The sculpted right-handed shape earns widespread praise for supporting the palm and wrist through long work sessions. Comfort is less universal for people who prefer vertical mice or a smaller, lighter shape.

29 supporting reviews

Logitech Signature Comfort Plus M850 L

The overall sculpted shape is widely comfortable, especially for long desk work, but reviewers disagree sharply on whether the built-in cushion adds meaningful ergonomic benefit.

10 supporting reviews

Logitech MX Master 4

Large-hand users often report an excellent fit, while some reviewers note that the size can be too much for smaller hands. Personal hand size matters more here than on compact mice.

4 supporting reviews

Logitech Signature Comfort Plus M850 L

Fit depends on hand size: several reviewers with medium-to-large hands liked it, while another large-handed reviewer found the body too compact.

3 supporting reviews · Mixed evidence

Logitech MX Master 4

Tracking is consistently described as smooth and precise across productivity and creative work, including fine editing. The heavy body can still make the pointer feel less agile in fast movement.

16 supporting reviews

Logitech Signature Comfort Plus M850 L

Tracking stayed stable even on uneven surfaces, with no precision problems noted in that testing.

1 supporting review · Limited evidence

Logitech MX Master 4

The raised body, thumb cradle, and palm support are repeatedly credited with reducing strain during desk work. The right-handed shape is the main accessibility limitation.

1 supporting review · Limited evidence

Logitech Signature Comfort Plus M850 L

The palm cushion is the most divisive feature. Some reviewers loved the softer support and pressure relief, while others barely contacted it or found its support negligible.

9 supporting reviews · Mixed evidence

Logitech MX Master 4

Reviewers generally think the premium price is justified for people who will use its productivity features every day. Value is much weaker for casual users and many MX Master 3S owners who do not need the new haptics or Action Ring.

20 supporting reviews · Mixed evidence

Logitech Signature Comfort Plus M850 L

Value opinions vary by price and alternatives: some reviewers call it outstanding budget value, while others find it pricey or hard to justify against better-equipped mice.

6 supporting reviews · Mixed evidence

Logitech MX Master 4

Hardware reliability is generally strong in current testing, but software quirks and inherited concerns about switches and the scroll wheel keep long-term confidence from being absolute.

22 supporting reviews · Mixed evidence

Logitech Signature Comfort Plus M850 L

No review summary available for this feature. Missing evidence does not mean the feature is absent.

Logitech MX Master 4

Current reviews do not report widespread double-click failures on the MX Master 4, but reviewers familiar with older models remain cautious about switch longevity.

1 supporting review · Limited evidence

Logitech Signature Comfort Plus M850 L

No review summary available for this feature. Missing evidence does not mean the feature is absent.

Logitech MX Master 4

Firmware reliability has a notable blemish: at least one long-term reviewer reports the thumb button still fails during click-and-drag after many months without a patch.

3 supporting reviews · Mixed evidence

Logitech Signature Comfort Plus M850 L

No review summary available for this feature. Missing evidence does not mean the feature is absent.

Logitech MX Master 4

Smart Actions and macro-style automation can reduce repetitive work and expand the mouse beyond simple button remaps. Power users appreciate the flexibility, while others find the software constraints limiting.

2 supporting reviews

Logitech Signature Comfort Plus M850 L

No review summary available for this feature. Missing evidence does not mean the feature is absent.

Logitech MX Master 4

Support for up to three paired devices is a major productivity benefit for users who move between computers or tablets. Reviewers especially value it in mixed Mac/PC setups.

8 supporting reviews

Logitech Signature Comfort Plus M850 L

No review summary available for this feature. Missing evidence does not mean the feature is absent.

Logitech MX Master 4

Opinions on plug-and-play support are mixed and depend heavily on workflow, preferences, or how deeply the mouse is customized.

1 supporting review · Limited evidence

Logitech Signature Comfort Plus M850 L

No review summary available for this feature. Missing evidence does not mean the feature is absent.

Logitech MX Master 4

Basic Bluetooth or Bolt pairing is usually described as quick and easy. The main setup complaints center on Logi Options+, permissions, and software troubleshooting rather than the wireless pairing itself.

10 supporting reviews · Mixed evidence

Logitech Signature Comfort Plus M850 L

No review summary available for this feature. Missing evidence does not mean the feature is absent.

Logitech MX Master 4

No review summary available for this feature. Missing evidence does not mean the feature is absent.

Logitech Signature Comfort Plus M850 L

The missing tilt wheel is a clear ergonomic and workflow drawback for users who frequently scroll sideways.

1 supporting review · Limited evidence

Logitech MX Master 4

Warranty coverage is viewed as short for an expensive productivity mouse, especially by reviewers concerned about long-term scroll-wheel or switch wear.

1 supporting review · Limited evidence

Logitech Signature Comfort Plus M850 L

No review summary available for this feature. Missing evidence does not mean the feature is absent.

Logitech MX Master 4

Scroll and pointer acceleration controls add useful tuning for people who want faster movement without giving up precision, though this is mainly a power-user benefit.

2 supporting reviews

Logitech Signature Comfort Plus M850 L

No review summary available for this feature. Missing evidence does not mean the feature is absent.

Logitech MX Master 4

Reviewers are broadly positive about balance and weight distribution, with most comments emphasizing that it works well in everyday productivity use.

2 supporting reviews

Logitech Signature Comfort Plus M850 L

No review summary available for this feature. Missing evidence does not mean the feature is absent.

Logitech MX Master 4

The move away from broad soft-touch rubber is generally seen as better for stain resistance and long-term appearance. A few reviewers prefer the softer old coating or dislike the new button texture.

22 supporting reviews · Mixed evidence

Logitech Signature Comfort Plus M850 L

No review summary available for this feature. Missing evidence does not mean the feature is absent.

Logitech MX Master 4

Cursor movement is repeatedly described as smooth, steady, and easy to control for detailed work. Weight can make rapid movements feel less agile.

4 supporting reviews

Logitech Signature Comfort Plus M850 L

No review summary available for this feature. Missing evidence does not mean the feature is absent.

Logitech MX Master 4

The larger PTFE feet are praised for smooth, controlled gliding and are seen as an improvement over the previous generation.

6 supporting reviews

Logitech Signature Comfort Plus M850 L

No review summary available for this feature. Missing evidence does not mean the feature is absent.

Logitech MX Master 4

Textured plastic and rubberized side areas generally provide secure grip, though opinions on the new button texture are mixed.

6 supporting reviews

Logitech Signature Comfort Plus M850 L

No review summary available for this feature. Missing evidence does not mean the feature is absent.

Logitech MX Master 4

The mouse is designed around right-handed use, and reviewers repeatedly call the lack of a left-handed version a meaningful limitation.

6 supporting reviews · Mixed evidence

Logitech Signature Comfort Plus M850 L

No review summary available for this feature. Missing evidence does not mean the feature is absent.

Logitech MX Master 4

Mac users generally report strong compatibility and useful gesture integration, though Options+ setup and Apple Universal Control can introduce friction.

5 supporting reviews

Logitech Signature Comfort Plus M850 L

No review summary available for this feature. Missing evidence does not mean the feature is absent.

Logitech MX Master 4

Reviewers frequently report steady tracking without skipping, shaking, or jerky motion, including on difficult surfaces.

1 supporting review · Limited evidence

Logitech Signature Comfort Plus M850 L

No review summary available for this feature. Missing evidence does not mean the feature is absent.

Logitech MX Master 4

Normal work feels responsive over Bluetooth or Bolt, but fast-paced gaming exposes the limitations of the 125 Hz report rate.

2 supporting reviews

Logitech Signature Comfort Plus M850 L

No review summary available for this feature. Missing evidence does not mean the feature is absent.

Logitech MX Master 4

The mouse earns a premium feel from its construction, quiet switches, metal wheels, and polished haptics. The premium price and hard-plastic changes make that impression slightly less universal.

6 supporting reviews

Logitech Signature Comfort Plus M850 L

No review summary available for this feature. Missing evidence does not mean the feature is absent.

Logitech MX Master 4

Per-application profiles are a major strength for creative and office workflows, letting the same controls behave differently in Photoshop, Final Cut, Excel, and other apps.

4 supporting reviews

Logitech Signature Comfort Plus M850 L

No review summary available for this feature. Missing evidence does not mean the feature is absent.

Logitech MX Master 4

The USB-C Logi Bolt receiver is generally praised for dependable pairing and modern laptop compatibility. Reviewers dislike that the Mac version omits it and that the mouse has nowhere to store it.

7 supporting reviews · Mixed evidence

Logitech Signature Comfort Plus M850 L

No review summary available for this feature. Missing evidence does not mean the feature is absent.

Logitech MX Master 4

Day-to-day pointer response is generally immediate and smooth, with little reported lag in productivity use. Gaming-focused reviewers are less impressed by the low polling rate.

11 supporting reviews · Mixed evidence

Logitech Signature Comfort Plus M850 L

No review summary available for this feature. Missing evidence does not mean the feature is absent.

Logitech MX Master 4

The wheel’s controlled resistance is generally praised, especially on the horizontal wheel. A few reviewers find the main wheel slightly loose when spun quickly.

3 supporting reviews · Mixed evidence

Logitech Signature Comfort Plus M850 L

No review summary available for this feature. Missing evidence does not mean the feature is absent.

Logitech MX Master 4

Switch quality is generally viewed as high because the primary clicks are quiet, tactile, and pleasant. Durability is the unresolved question.

8 supporting reviews

Logitech Signature Comfort Plus M850 L

No review summary available for this feature. Missing evidence does not mean the feature is absent.

Logitech MX Master 4

The shift to a USB-C Bolt receiver and USB-C charging is welcomed for modern laptops and tablets. Reviewers also appreciate being able to charge while continuing to work.

7 supporting reviews · Mixed evidence

Logitech Signature Comfort Plus M850 L

No review summary available for this feature. Missing evidence does not mean the feature is absent.

Logitech MX Master 4

Reviewers criticize the continued lack of built-in storage for the Bolt receiver, an avoidable inconvenience on a premium travel-capable mouse.

3 supporting reviews · Mixed evidence

Logitech Signature Comfort Plus M850 L

No review summary available for this feature. Missing evidence does not mean the feature is absent.

Logitech MX Master 4

Windows use is broadly straightforward, with strong customization and Bolt support. Older Windows 10 Bluetooth limitations are a caveat rather than a day-to-day issue for current systems.

6 supporting reviews

Logitech Signature Comfort Plus M850 L

No review summary available for this feature. Missing evidence does not mean the feature is absent.

Logitech MX Master 4

USB-C is for charging only, so the mouse remains wireless even while plugged in. Reviewers generally accept using it during charging but note that it cannot operate as a true wired mouse.

1 supporting review · Limited evidence

Logitech Signature Comfort Plus M850 L

No review summary available for this feature. Missing evidence does not mean the feature is absent.

Logitech MX Master 4

The relocated battery/status light is a small but welcome refinement, with reviewers finding it easier to see from normal desk angles.

2 supporting reviews

Logitech Signature Comfort Plus M850 L

No review summary available for this feature. Missing evidence does not mean the feature is absent.

Logitech MX Master 4

USB-C charging is convenient because the mouse remains usable while plugged in, avoiding the downtime associated with bottom-charging designs.

3 supporting reviews

Logitech Signature Comfort Plus M850 L

No review summary available for this feature. Missing evidence does not mean the feature is absent.

Logitech MX Master 4

Charging speed is another convenience: reviewers report that the mouse tops up quickly, complementing its already long battery life.

2 supporting reviews

Logitech Signature Comfort Plus M850 L

No review summary available for this feature. Missing evidence does not mean the feature is absent.

Logitech MX Master 4

The large number of physical controls is a productivity advantage for power users. Some reviewers find the mouse overly busy or complex until muscle memory develops.

6 supporting reviews

Logitech Signature Comfort Plus M850 L

No review summary available for this feature. Missing evidence does not mean the feature is absent.

Logitech MX Master 4

Buttons generally feel solid, quiet, and satisfying, with the new thumb control easier to actuate. Some side controls can feel clunky or be triggered accidentally.

7 supporting reviews · Mixed evidence

Logitech Signature Comfort Plus M850 L

No review summary available for this feature. Missing evidence does not mean the feature is absent.

Logitech MX Master 4

Gesture controls remain useful for desktop switching, Mission Control, and navigation, but opinions vary on whether they beat familiar keyboard or trackpad gestures.

15 supporting reviews

Logitech Signature Comfort Plus M850 L

No review summary available for this feature. Missing evidence does not mean the feature is absent.

Logitech MX Master 4

Haptics feel polished and satisfying to many reviewers, especially with the Action Ring and supported creative apps. Others see them as a pleasant gimmick rather than a reason to upgrade.

39 supporting reviews · Mixed evidence

Logitech Signature Comfort Plus M850 L

No review summary available for this feature. Missing evidence does not mean the feature is absent.

Logitech MX Master 4

The many programmable controls are repeatedly praised for letting users move common commands off the keyboard. Their value rises sharply for editing and other repetitive professional workflows.

5 supporting reviews

Logitech Signature Comfort Plus M850 L

No review summary available for this feature. Missing evidence does not mean the feature is absent.

Logitech MX Master 4

Software stability is mixed: many reviewers run Options+ without trouble, while others report setup loops, resource problems, or past kernel panics. Advanced features therefore carry some software risk.

1 supporting review · Limited evidence

Logitech Signature Comfort Plus M850 L

No review summary available for this feature. Missing evidence does not mean the feature is absent.

Logitech MX Master 4

The shape also works well for claw grip according to reviewers who tried multiple grip styles, though the large body remains a preference issue.

2 supporting reviews

Logitech Signature Comfort Plus M850 L

No review summary available for this feature. Missing evidence does not mean the feature is absent.

Logitech MX Master 4

Long-term impressions are encouraging for the new materials, but reviewers remain cautious about scroll-wheel and switch longevity based on prior models. The repairable battery design helps the ownership outlook.

8 supporting reviews

Logitech Signature Comfort Plus M850 L

No review summary available for this feature. Missing evidence does not mean the feature is absent.

Logitech MX Master 4

Fingertip use is possible despite the size, but the weight and large shell make it less naturally suited to that grip than lighter mice.

3 supporting reviews

Logitech Signature Comfort Plus M850 L

No review summary available for this feature. Missing evidence does not mean the feature is absent.

Logitech MX Master 4

Palm-grip users are especially well served by the large sculpted body, which supports the hand comfortably over long sessions.

4 supporting reviews

Logitech Signature Comfort Plus M850 L

No review summary available for this feature. Missing evidence does not mean the feature is absent.

Logitech MX Master 4

The familiar sculpted shape is one of the mouse’s strongest qualities and fits many reviewers naturally. A few prefer the older shape or a vertical mouse.

14 supporting reviews

Logitech Signature Comfort Plus M850 L

No review summary available for this feature. Missing evidence does not mean the feature is absent.

Logitech MX Master 4

Switch longevity is a lingering concern because earlier MX units developed click failures for some owners. The current model’s quieter switches feel good, but long-term confidence is not universal yet.

3 supporting reviews · Mixed evidence

Logitech Signature Comfort Plus M850 L

No review summary available for this feature. Missing evidence does not mean the feature is absent.

Logitech MX Master 4

Wireless performance is broadly praised as dependable, with the revised antenna and Bolt receiver delivering smooth day-to-day use. The underlying 125 Hz report rate still limits gaming responsiveness.

8 supporting reviews

Logitech Signature Comfort Plus M850 L

No review summary available for this feature. Missing evidence does not mean the feature is absent.