Smartwatches with an FDA-cleared ECG
An FDA-cleared ECG app records a single-lead ECG and checks it for signs of atrial fibrillation. 15 watches here carry one; the cheapest is the Fitbit Sense 2. 12 of them tie the feature, or the watch, to one phone maker, so the phone column matters as much as the price.
How this list is ordered: Included when the maker's US page or the FDA's database cites a clearance for the watch's ECG feature. Ordered by price. A clearance is not medical advice; it says what the feature may claim. 15 of the catalog’s watches qualify.
1Fitbit
~$250Fitbit Sense 2
Fitbit's health-focused watch adds an ECG app and a cEDA skin-conductance sensor for body-response tracking to the Versa 4's design.
- Cleared · works with
- ECG app, Irregular rhythm notifications · iPhone and Android
- Type
- Fitness
iPhone and Android
2Google
~$350Google Pixel Watch 4
Still on sale a year after launch, the 2025 Pixel Watch shares the Pixel Watch 5's case sizes, weights, dual-frequency GPS, satellite SOS and battery ratings.
- Cleared · works with
- ECG app, Irregular rhythm notifications, Loss of Pulse Detection · Android only
- Type
- Everyday smartwatch
Android only
3Withings
~$370Withings ScanWatch 2
Behind analog hands and sapphire glass, ScanWatch 2 records a single-lead ECG in 30 seconds from a finger on the steel bezel, and Withings' ECG App is FDA-cleared to detect atrial fibrillation.
- Cleared · works with
- ECG (atrial fibrillation detection) · iPhone and Android
- Type
- Hybrid
iPhone and Android
4Samsung
~$380Samsung Galaxy Watch9
Samsung's 2026 mainstream watch is the first Galaxy Watch on the Snapdragon Wear Elite platform, per Samsung, and its 40 mm battery is 20% larger than Galaxy Watch8's.
- Cleared · works with
- ECG Monitor app, Sleep apnea feature · Android; some features need the maker's own phone
- Type
- Everyday smartwatch
Android; some features need the maker's own phone
5Apple
~$399Apple Watch Series 12
Apple's 2026 mainstream watch adds a new Health Sensing System that, per Apple, takes background heart rate readings 60x more often than Series 11 and HRV 24x more often, feeding a new Readiness score.
- Cleared · works with
- ECG app, Irregular rhythm notifications, Sleep apnea notifications, Hypertension notifications · iPhone only
- Type
- Everyday smartwatch
iPhone only
6Google
~$400Google Pixel Watch 5
Google's 2026 watch keeps Pixel Watch 4's case, weights and battery ratings but moves to Wear OS 7, doubles storage to 64 GB and, per Google, runs 20% faster.
- Cleared · works with
- ECG app, Irregular rhythm notifications, Loss of Pulse Detection · Android only
- Type
- Everyday smartwatch
Android only
7Samsung
~$500Samsung Galaxy Watch8 Classic
Samsung did not release a Watch9 Classic, so this 2025 model remains its only watch with the physical rotating bezel, now paired with a Quick Button.
- Cleared · works with
- ECG Monitor app, Sleep apnea feature · Android; some features need the maker's own phone
- Type
- Everyday smartwatch
Android; some features need the maker's own phone
8Garmin
~$550Garmin Venu 4
Launched in September 2025, Venu 4 adds an LED flashlight, a stainless-steel bezel, multi-band GPS and the ECG app to Garmin's lifestyle line.
- Cleared · works with
- ECG app · Android; iPhone with limits
- Type
- Fitness
Android; iPhone with limits
9Withings
~$600Withings ScanWatch Nova
Withings dresses the ScanWatch 2 health stack in a diver-style case: a unidirectional ceramic-and-steel rotating bezel, anti-reflective sapphire, Super-LumiNova hands and an integrated metal bracelet, plus a rubber strap in the box.
- Cleared · works with
- ECG (atrial fibrillation detection) · iPhone and Android
- Type
- Hybrid
iPhone and Android
10Samsung
~$700Samsung Galaxy Watch Ultra2
An 800 mAh battery, the largest Samsung has put in a Galaxy Watch, gives the Ultra2 a rated 60 hours with the always-on display on, double the Galaxy Watch9.
- Cleared · works with
- ECG Monitor app, Sleep apnea feature · Android; some features need the maker's own phone
- Type
- Rugged outdoor
Android; some features need the maker's own phone
11Garmin
~$750Garmin Forerunner 970
Garmin's top Forerunner since May 2025 brings fēnix-class tools into a 56 g running watch: preloaded road and trail maps, an LED flashlight, the ECG app, a sapphire lens and a titanium bezel.
- Cleared · works with
- ECG app · Android; iPhone with limits
- Type
- Running
Android; iPhone with limits
12Apple
~$799Apple Watch Ultra 4
Apple's outdoor and endurance model keeps the 49 mm titanium case and sapphire crystal but adds the 2026 Health Sensing System, which Apple says samples heart rate 60x more often than Ultra 3.
- Cleared · works with
- ECG app, Irregular rhythm notifications, Sleep apnea notifications, Hypertension notifications · iPhone only
- Type
- Rugged outdoor
iPhone only
13Garmin
~$900Garmin Enduro 4
Announced on October 6, 2026, Garmin's longest-lasting solar watch is rated at 36 days in smartwatch mode, 90 with solar, and up to 320 hours of activity recording in Extended Battery mode with sun.
- Cleared · works with
- ECG app · Android; iPhone with limits
- Type
- Rugged outdoor
Android; iPhone with limits
14Garmin
~$1,000Garmin fēnix 9
Garmin's August 2026 flagship gets an AMOLED screen it says is twice as bright as fēnix 8's, 50% more RAM with up to 30% faster map panning, and 64 GB for twice the map storage.
- Cleared · works with
- ECG app · Android; iPhone with limits
- Type
- Multisport
Android; iPhone with limits
15Garmin
~$1,100Garmin fēnix 9 Pro
Garmin calls this the first fēnix with a titanium case, joined to plastic by nano-molding to keep it thin.
- Cleared · works with
- ECG app · Android; iPhone with limits
- Type
- Multisport
Android; iPhone with limits
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- The cheapest running watches with dual-band GPS