The Apple Watch Series 10 offers more features and better accuracy, but requires an iPhone and has shorter battery life. The Fitbit Charge 7 is more versatile in terms of compatibility and potentially has longer battery life, but may lack some of the advanced features of the Apple Watch.
| Attribute | Fitbit Charge 7 | Apple Watch Series 10 |
|---|---|---|
| Battery Life (days) | Up to 7 days (may vary with GPS and always-on display usage), rumors suggest up to 18 days | Up to 0.75 days (18 hours) under normal use, up to 1.5 days (36 hours) in Low Power Mode |
| Display Type | HD AMOLED | Always-On Retina LTPO3 OLED |
| Screen Size (inches) | 1.5 inches | 42mm and 46mm sizes (42mm: 989 sq mm display area with 374 by 446 pixels, 46mm: 1220 sq mm display area with 416 by 496 pixels) |
| GPS Accuracy | May utilize Google Maps data and Wi-Fi networks for more precise tracking | Uses L1 GPS, GLONASS, Galileo, QZSS, and BeiDou; performs as well as the Apple Watch Ultra 2 |
| Heart Rate Sensor Accuracy | Enhanced heart rate monitoring, especially during high-intensity exercises. May include AI-powered sensor. | Third-generation optical heart sensor and an electrical heart sensor; 99.6% accuracy for sinus rhythm, 98.3% accuracy for AFib classification in a controlled environment |
| Water Resistance (ATM) | 5 ATM (50 meters) | 5 ATM (50m swimproof) |
| Sleep Tracking Accuracy | Improved sleep tracking with more detailed insights into sleep stages | Tracks sleep stages and detects signs of sleep apnea, but comparing sleep stages is generally unreliable |
| Mobile Payment Support | Google Wallet | Apple Pay |
| Operating System Compatibility | Android and iOS devices (speculated transition to Google's Wear OS) | Requires iPhone XS or later with iOS 18 or later |
| Built-in Music Storage | Not available, but expected to offer music controls | Yes |