Apple Watch Series 10 vs Garmin Fenix 8 Pro: Health Features Head-to-Head Comparison
Apple Watch Series 10 vs Garmin Fenix 8 Pro: Health Features Head-to-Head
The smartwatch health monitoring landscape continues to evolve rapidly in 2026, with two of the most popular wearables—Apple Watch Series 10 and Garmin Fenix 8 Pro—leading the charge in wrist-based health tracking. Here's how they compare.
Heart Rate Monitoring
Both devices use optical heart rate sensors, but with different approaches. The Apple Watch Series 10 features a third-generation optical heart sensor with improved accuracy during high-intensity workouts. Garmin's Fenix 8 Pro utilizes the Elevate V5 sensor, which has been praised for its consistency during multi-sport activities.
| Feature | Apple Watch Series 10 | Garmin Fenix 8 Pro |
|---|---|---|
| Heart Rate Sensor | 3rd Gen Optical | Elevate V5 Optical |
| ECG App | Yes | No |
| Blood Oxygen | Yes (SpO2) | Pulse Ox |
| Battery (Smartwatch Mode) | 18 hours | Up to 48 days (Solar) |
Sleep Tracking
Apple's sleep tracking has matured significantly with watchOS updates, offering sleep stages, breathing rate, and wrist temperature sensing. Garmin provides Sleep Score with advanced sleep monitoring, tracking light, deep, and REM sleep, plus providing a Sleep Coach feature.
Advanced Health Metrics
The Apple Watch Series 10 introduces a temperature sensor for cycle tracking and ovulation estimates, alongside the existing ECG and blood oxygen monitoring. Garmin counters with Body Battery energy monitoring, Stress tracking, and Hydration tracking—features particularly popular among athletes and outdoor enthusiasts.
FDA-Regulated Features
Apple holds FDA clearance for its ECG app and irregular heart rhythm notification, giving it a regulatory edge in clinical-grade health monitoring. Garmin's health features, while comprehensive, are positioned more as wellness indicators rather than medical-grade diagnostics.
Which Should You Choose?
For urban users prioritizing clinical health features like ECG and FDA-cleared notifications, the Apple Watch Series 10 remains the stronger choice. For outdoor athletes and adventurers who need extended battery life and comprehensive fitness metrics, the Garmin Fenix 8 Pro's solar charging capability and rugged build make it the better option.
"The convergence of smartwatch health features with medical-grade diagnostics represents the most significant shift in personal health monitoring since the smartphone." — aBlogtoWatch, September 2024
Frequently Asked Questions
Q: Can the Garmin Fenix 8 Pro detect atrial fibrillation?
A: No, Garmin does not currently offer FDA-cleared ECG or AFib detection. For clinical heart monitoring, Apple Watch remains the leader.
Q: Which smartwatch has better battery life for continuous health monitoring?
A: Garmin Fenix 8 Pro with solar charging offers significantly longer battery life—up to 48 days in smartwatch mode versus Apple's 18 hours.
Q: Are both devices waterproof for swimming?
A: Yes, both offer water resistance suitable for swimming. Apple Watch Series 10 is WR50 rated, while Garmin Fenix 8 Pro is rated to 10 ATM.
Sources: aBlogtoWatch | WatchPro | Worn & Wound