| Display | 1.5-inch AMOLED, 480x480, 323 ppi, up to 3,000 nits peak, strengthened glass with anti-fingerprint coating | — |
|---|
| Body | Aluminum alloy frame, polymer case; 48.5 x 48.5 x 12.2 mm, 39.5 g without strap; 22 mm silicone strap; two buttons | — |
|---|
| Battery | Up to 25 days (typical use), up to 13 days (heavy use), up to 10 days with always-on display; up to 64 hours of continuous GPS; 658 mAh | Up to 7 days (Fitbit estimate, default settings) |
|---|
| Positioning | Five satellite positioning systems; free downloadable offline maps, including ski resort maps | — |
|---|
| Sensors | BioTracker PPG biometric sensor (5PD + 2LED), accelerometer, gyroscope, geomagnetic, barometric altimeter, ambient light, temperature | Heart rate with machine-learning algorithm (up to 60% more accurate than Charge 5 in HIIT, spinning and rowing per Fitbit), ECG app (select countries), EDA stress scan, SpO2, heart rate variability, breathing rate |
|---|
| Connectivity | Bluetooth LE 5.3, Bluetooth calls, microphone and speaker | — |
|---|
| Durability | 5 ATM water resistance (ISO 22810:2010) | — |
|---|
| Storage | 4GB onboard | — |
|---|
| Sports | 170+ sport modes, automatic recognition of 25 strength exercises, HYROX tools, HybridCharge energy intelligence | — |
|---|
| OS | Zepp OS (release notes list an upgrade to Zepp OS 6); Zepp App for Android 7.0+ and iOS 14.0+ | — |
|---|
| Navigation | — | Built-in GPS; Google Maps turn-by-turn directions |
|---|
| Features | — | Google Wallet contactless payments, YouTube Music controls (Premium subscription), 40+ exercise modes, heart rate broadcast to compatible gym equipment over encrypted Bluetooth, Zoom + Magnification accessibility feature |
|---|
| Controls | — | Haptic side button |
|---|
| Compatibility | — | Android 9.0 or newer, iOS 15 or newer, Google Account required |
|---|
| Subscription | — | 6 months of Fitbit Premium included with device |
|---|
| Colors | — | Obsidian, Porcelain, Coral |
|---|
