Compare Garmin Forerunner 965 vs Amazfit T-Rex 3 Pro

Heart-rate accuracy was generally strong and often close to chest straps, though high-intensity intervals could show lag or spotty readings.

Heart rate accuracy is mixed-to-good. Many reviewers found it solid, close or pleasantly surprising, but others saw sketchy readings, cadence lock, rough-ride drift or weaker accuracy than Garmin.

GPS accuracy was one of the strongest points, repeatedly described as highly accurate, reliable, and often best-in-class.

GPS accuracy is broadly praised across road runs, hikes and route comparisons, with caveats around cycling, tunnels, corners and selecting the right GPS mode.

Fitness tracking accuracy was broadly praised across distance, elevation, running dynamics, and sports metrics, with gym heart-rate caveats.

Fitness tracking accuracy is generally solid, though not flawless: reviewers praised broad tracking and race/run data, while one reported missed surfing waves and another found exercise recognition only so-so.

Sleep tracking was mixed: several reviewers found it excellent or improved, while others criticized sleep phases or felt results were off.

Sleep tracking accuracy is mixed. Some reviewers found it reliable or similar to Oura, while others felt scores were inflated or not fully convincing.

Suggested workouts, interval tools, race guidance, and on-wrist coaching were repeatedly described as helpful for training.

Coaching features are underdeveloped in the evidence. Reviewers found Zepp Coach suggestions awkward or described training insights as still a work in progress.

Recovery insights were a standout, especially Training Readiness, which reviewers found actionable, digestible, and useful.

Recovery insights are uneven. Reviewers liked alignment with Garmin or BioCharge concepts, but criticized lack of detail, half-baked insights or needing to wear the watch overnight.

Workout variety was a major strength, with reviewers praising the large sport-mode library and deep multisport functionality.

Workout tracking variety is a strong point, with reviewers repeatedly noting an unusually large number of sports and activity profiles.

Calorie usefulness was split between helpful fueling alerts and weak diet/caloric-consumption tracking.

Calorie tracking was praised in one review for being native to the Zepp app and easy to use for meal logging against calorie expenditure.

Health tracking was praised for the breadth and quality of Garmin’s metrics, especially for active users.

Health tracking accuracy is generally positive in the evidence, with reviewers reporting close alignment with chest straps, comparison watches, Oura data or HRV expectations.

Wellness insights were valued for health, fitness, stress, body battery, and sleep context, though one reviewer ignored some metrics.

Wellness insights are mixed-to-positive. BioCharge and HRV can feel useful and aligned with how reviewers felt, but some reviewers wanted deeper or more cohesive detail.

One reviewer found blood oxygen readings close to a pulse oximeter, supporting strong SpO2 tracking confidence.

Blood oxygen tracking received limited but positive evidence, with one reviewer saying it matched a comparison watch’s 96 percent reading impressively.

Stress tracking was included in useful readiness and health context rather than treated as a standalone killer feature.

Stress tracking has limited positive evidence, grouped with sleep tracking as commendable in one review.

Battery life was broadly praised as strong for everyday training and most races, with caveats around always-on AMOLED, GPS-heavy use, and ultra-distance events.

Battery life is one of the strongest points, with reviewers repeatedly getting many days to roughly two weeks or more depending on always-on display, GPS and health-tracking settings.

Charging convenience was a repeated weakness due to Garmin’s proprietary connector, loose cable complaints, and lack of wireless charging.

Charging convenience is generally positive, with reviewers liking the compact magnetic USB-C puck or reporting easy charging, despite some charger-position caveats elsewhere.

Charging speed was praised as fast or at least on the better side, with reviewers noting quick top-ups.

Charging speed is mixed: one review called a full recharge slow at about two hours, while others said the watch charges fast or can be topped up quickly.

Comfort was mostly positive because the watch is light and wearable 24/7, though some reviewers found it bulky or heavy at first.

Comfort is mixed and size-dependent. Some found the big watch wearable or better than expected, while another could not sleep comfortably with the 48mm case.

Materials were mostly praised for high-quality straps and a premium titanium bezel, though not all durability concerns disappeared.

Materials quality is mostly praised for titanium, sapphire and premium upgrades, though one reviewer said the finish still does not match more expensive watches.

Size options were a weakness because the 965 comes in only one size and can feel large on small wrists.

Size options are a clear improvement because reviewers liked the addition of 44mm and 48mm cases for different wrist sizes.

Build quality was mixed: reviewers liked Garmin durability in general but noted the flatter screen and bezel can be easier to hit or scratch.

Build quality is praised as robust, premium for the price, and materially upgraded, especially where reviewers focus on the titanium-and-sapphire hardware package.

The stock silicone/removable straps were generally praised as flexible, comfortable, good-looking, and easy to swap.

Band feedback is mixed. One reviewer liked the Pro’s improved quick-release setup, while several complained the strap was fiddly, sticky, or not as nice as premium rivals.

Durability was mixed: some reviewers saw scratch resistance and solid materials, while several reported scratches or durability concerns.

Durability was strongly praised where tested, with one reviewer saying the watch felt built to take serious knocks.

Style and design were praised as sporty, premium, modern, and among the better-looking Forerunner designs.

Style and design are subjective and mixed. Reviewers liked the rugged/premium look, but others found it bulky, harsh, angular or not premium-looking.

Fit was positive for users comfortable with Garmin sizing, but the larger case was not ideal for smaller wrists.

Fit has limited positive evidence, with one reviewer saying the strap holes and stretch made it easy to get the fit right.

Water resistance was strong in swim/shower-style use, with no accidental toggles and 50m/5ATM confidence noted.

Water resistance gets positive evidence from reviewers who accepted the 10 ATM/dive positioning and one who said it worked beyond 45 meters in testing.

The AMOLED display drew very strong praise for color, legibility, sharpness, maps, and overall upgrade value.

Display quality is mostly good thanks to brightness and sapphire, but reviewers noted fingerprints, smearing or cleaning issues in some tests.

Reviewers found the AMOLED display bright enough indoors and at low settings, with clear improvements over older displays.

Brightness is widely praised, especially the 3,000-nit display, although one reviewer noted auto-brightness can be conservative in very bright settings.

Outdoor visibility was praised in sun, water, and all-light conditions, despite AMOLED battery tradeoffs.

Outdoor visibility is a major strength, with multiple reviewers reporting easy viewing in direct sunlight, bright weather or varied outdoor conditions.

Reliability was generally positive, with only minor bugs noted and one long-term reviewer saying it performed well in demanding use.

Reliability is mixed-to-poor outside core tracking. Some reviewers saw dependable battery and daily use, but several called software, navigation or readouts unfinished and inconsistent.

Value was context-dependent: reviewers praised the feature set and later discounts, but questioned the price for casual users or 955/265 owners.

Value for money is broadly strong, with many reviewers calling it a steal, crazy value, or an excellent feature set for the price, though critical reviews still recommend alternatives for polish.

Exercise auto-detection was criticized because training features require manually starting activities.

Automatic workout recognition was praised in one full review for consistently picking up common activities such as walking, running, cycling and swimming.

The missing dedicated flashlight was repeatedly framed as a disappointment, especially compared with higher-end Garmin models.

The LED flashlight is one of the most consistently praised features, described as genuinely useful for everyday, travel, outdoor and visibility situations.

Safety-related features were praised through navigation alerts, LiveTrack, and situational-awareness benefits.

Safety features are a weakness overall. The flashlight/SOS modes help somewhat, but reviewers criticize the lack of fall detection, crash detection, SOS, satellite messaging or LTE.

Cross-platform use was positive overall, with Android offering more watch interaction and Apple Health integration appreciated.

Cross-platform compatibility is a clear strength, with reviewers praising support for both Android and iOS.

ECG was a recurring missing feature and was called disappointing or expected by several reviewers.

ECG functionality is a weakness because reviewers explicitly flagged ECG as missing or something that might put buyers off.

LTE was a clear omission; reviewers called Garmin’s lack of cellular connectivity a shame or noted it was not added.

LTE connectivity is a weakness because reviewers explicitly call out the lack of LTE, 5G or cellular support as part of the safety and smartwatch tradeoff.

Menu navigation was generally easy once learned, with reviewers calling controls frictionless or easy to get used to.

Menu navigation is a weakness in critical reviews, with repeated complaints about extra button presses and too many steps to access tools.

Voice assistant support was weak because the watch lacks true assistant, microphone, and call-smarts expected from fuller smartwatches.

Voice assistant quality is mixed. Zepp Flow can be powerful and useful for commands, but reviewers also saw failed queries, misheard contacts or limited reliability.

Onboard music was praised for Spotify/offline support and 32GB storage for music and maps.

Onboard music storage is limited by MP3-only playback and no major streaming-service support, which several reviewers found outdated or frustrating.

Software smoothness was praised, with the UI described as smoother, faster, and free of lag in normal use.

Software smoothness varies sharply. Some found the interface snappy, but many reviewers reported lag, rough edges, immature software or unfinished features.

The interface was widely praised as easier, cleaner, more modern, and dramatically improved by AMOLED.

The user interface is polarized: a few reviewers found it intuitive enough, but several criticized rough edges, poor flow or very frustrating UX.

Reviewers liked Garmin’s cloud sync, Strava/Apple Health integration, Connect IQ options, and lack of a required subscription, though it remains sports-first.

The app ecosystem is mixed-to-weak: reviewers liked having some apps and watch faces, but repeatedly said Zepp’s app store lacks big names and trails Apple or Google.

Mapping and navigation were major strengths, with detailed AMOLED maps, turn prompts, trail help, and strong route-following support.

Mapping and navigation are the most divided area. Reviewers praise full-color/offline maps, but routing, rerouting, route creation and map transfer are often described as clunky, inconsistent or unreliable.

Call handling was mixed to weak: one review listed calls among lifestyle features, while others noted missing wrist-call or hands-free functionality.

Call handling is mixed. Several reviewers found Bluetooth call quality useful or surprisingly good, while others said the speaker and microphone were not loud or high-quality enough.

Garmin Pay was treated as useful in concept but limited by inconsistent bank support, especially outside the US.

Contactless payments are a repeated weakness because Zepp Pay does not work in the United States for one reviewer and drew another dismissive Apple Pay comparison.

The OS experience was viewed as effective and more fun with the refreshed AMOLED-era interface.

The operating-system experience is mixed. Some found ZeppOS logical and easy, while others said it lacks polish or feels immature versus rivals.

Watch faces benefited from AMOLED and were sometimes called stunning, though one reviewer noted fewer choices than before.

Watch face quality has limited positive evidence, with one reviewer liking the variety and style of available faces.

Sensor connectivity was viewed as a strength because the watch supports broad ANT+ and Bluetooth Smart pairing.

Bluetooth support drew limited positive evidence, mainly around the ease of pairing external sensors over Bluetooth.

Pairing and syncing were positive, with quick phone pairing and seamless Strava syncing noted.

Pairing reliability has limited but strong evidence, with one reviewer reporting a totally reliable phone connection.

Wi-Fi was a weak point for large map downloads because the watch-side transfer was described as slow.

Wi-Fi connectivity drew limited negative evidence because one reviewer said map transfer was slow even over Wi-Fi.

Notifications were useful and more readable, but iOS limitations and limited message handling held them back.

Smartphone notifications are mixed: they arrive reliably and can be useful, but reviewers criticized limited replies, missing rich interactions or excessive buzzing.

Garmin Connect was viewed as powerful and data-rich, but some reviewers found its organization confusing or dated.

The companion app divides reviewers: some call Zepp insightful, intuitive or well presented, while others find it clunky, unpolished or poor for training workflows.

Customization was a clear strength, from data screens and watch faces to app and watch settings.

Customization received limited positive evidence around clear data presentation and configurable workout stat screens.

Third-party app support was mixed: Strava and Connect IQ are useful, but Garmin apps can feel clunky or less polished.

Third-party app support is mixed: syncing with services like Strava can work smoothly, but reviewers still criticize the lack of major on-watch apps.

Buttons were consistently praised as tactile, easy to use during workouts, and a dependable alternative to touch controls.

Button controls are generally useful, especially in wet, gloved or workout conditions, though one reviewer found the up/down buttons sticky on hikes.

Touch controls were useful and optional, with reviewers appreciating that buttons can replace touch during workouts.

Touchscreen responsiveness is generally positive in limited evidence, with reviewers calling touch interaction responsive, flawless or well executed alongside buttons.

Smartwatch features were the main compromise: useful basics exist, but reviewers repeatedly called the experience barebones or limited.

Smartwatch features are mixed. One reviewer found them strong outside Apple/Samsung/Google, while others found them limited, annoying, or less complete than premium ecosystems.

Music controls were adequate for basic use, but one reviewer noted playback issues when skipping or changing playlists.

Music controls are limited but usable: reviewers note phone playback control as a nice feature, while warning that streaming-service support is absent.

Step counting was tested as accurate, with a very low error rate in one review.