Best 2023 Smartwatches for ECG functionality

#1 Withings ScanWatch 2
4.6

ECG functionality was consistently praised as simple, useful, medically oriented, and easy to share with a doctor.

Pros: style and design, battery life

Cons: smartwatch features, value for money

#2 Withings ScanWatch Nova
4.1

ECG functionality was usually praised as easy, useful, or medically meaningful, though one reviewer noted setup delays and another found it movement-sensitive.

Pros: battery life, style and design

Cons: value for money, charging convenience

#3 Garmin Venu 3
3.0

ECG evidence is mixed by review timing: some reviews found it unavailable or finicky, while later evidence notes FDA-approved on-device ECG readings.

Pros: battery life, GPS accuracy

Cons: smartwatch features, smartphone notifications

#4 Samsung Galaxy Watch 6
2.9

ECG functionality was seen as potentially valuable but limited by Samsung-phone restrictions, confusing result presentation, and low personal usefulness for some reviewers.

Pros: software smoothness, comfort

Cons: battery life, GPS accuracy

#5 Garmin Vivoactive 5
2.0

ECG scored low because reviewers noted the watch lacks ECG eligibility or requires accepting the missing feature.

Pros: value for money, GPS accuracy

Cons: sleep tracking accuracy, recovery insights

#6 Garmin Epix Pro (Gen 2)
2.0

ECG functionality was treated as a drawback in the review evidence because the feature was built in but not available at the time of testing.

Pros: battery life, GPS accuracy

Cons: user interface, fit

#7 Suunto Vertical
1.8

ECG was criticized by omission in a smartwatch-feature comparison because reviewers noted the Vertical lacks ECG functionality.

Pros: battery life, GPS accuracy

Cons: heart rate accuracy, value for money

#8 Xiaomi Watch 2 Pro
1.5

ECG support was scored poorly because reviewers explicitly noted that ECG functionality is absent despite related electrical sensors.

Pros: app ecosystem, battery life

Cons: size options, comfort

#9 Garmin Forerunner 965
1.1

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

Pros: battery life, GPS accuracy

Cons: smartwatch features, charging convenience

#10 Garmin fēnix 7X Pro
1.0

ECG functionality was a clear weakness because reviewers repeatedly noted the hardware was not enabled and had no guaranteed future.

Pros: battery life, mapping and navigation

Cons: value for money, score tracking

#11 Garmin Forerunner 265
1.0

Reviewers treated ECG as a clear missing health feature rather than a working capability.

Pros: battery life, value for money

Cons: mapping and navigation, smartwatch features

#12 Casio G-Shock GBD-H2000
1.0

ECG is effectively a missing health feature, noted as part of the watch’s limited deep-health toolkit.

Pros: comfort, battery life

Cons: companion app quality, value for money