![.atc-faceout-container.sp_atc { position: absolute; bottom: 0; right: 0; width: auto; } form#spAddToCart { margin-bottom: 0; } .ax-replace.stepper_wrapper { padding: 6px; } .ax-atc.sp-ax-atc { position: absolute; right: 6px; bottom: 6px; } .sp_desktop_quantity_stepper_container { position: absolute; bottom: 6px; right: 6px; z-index: 10; } .sp_atc_and_image { position: relative; } #widget-spotbutton { height: 32px !important; width: 32px !important; min-width: 32px !important; } Apple Watch Series 11 [GPS + Cellular 42mm] Smartwatch with Rose Gold Aluminum Case...](https://i.shopsavvy.com/https://i.shopsavvy.com/https://m.media-amazon.com/images/I/6110Jv9wqeL._AC_UF480,480_SR480,480_.jpg)
Both watches offer FDA-cleared ECG functionality and comprehensive heart monitoring.
How ECG Works
ECG (electrocardiogram) measures your heart's electrical activity. Both watches detect atrial fibrillation (AFib), an irregular rhythm that increases stroke risk.
Taking an ECG:
- Apple Watch Series 11: Open ECG app, place finger on Digital Crown, wait 30 seconds
- Galaxy Watch 7: Open Samsung Health, touch side buttons, wait 30 seconds
Results: Normal sinus rhythm, atrial fibrillation, inconclusive, or poor recording.
Apple Watch Series 11 Heart Features
- On-demand ECG readings
- Continuous heart rate monitoring
- Irregular rhythm notifications (background AFib detection)
- High and low heart rate alerts
- VO2 max estimates
- New: Hypertension alerts (blood pressure trends over 30 days)
Galaxy Watch 7 Heart Features
- On-demand ECG readings
- Continuous heart rate monitoring
- Irregular rhythm notifications
- Heart rate alerts
- Blood pressure readings (requires cuff calibration)
- Coming: Vascular load metric
Key Differences
Blood Pressure:
- Apple detects hypertension patterns passively over time
- Samsung provides actual readings but requires regular calibration
Limitations
Both watches cannot detect:
- Heart attacks
- Blood clots
- Strokes
- Other cardiac conditions
A "normal" ECG means no detectable AFib right now. These are screening tools, not comprehensive heart monitors. Regular doctor visits are still necessary.
Bottom line: Both watches have excellent, potentially life-saving heart monitoring. Apple's passive monitoring is more convenient. Samsung's blood pressure readings are more detailed.
How we researched this
Where this comes from: This answer is based on ShopSavvy's product database, real-time pricing from thousands of retailers, and a look at hundreds of user reviews to give you a well-rounded picture.
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