| Display | 1.91" TFT LCD, 320x380, 260 PPI, 2.5D tempered glass with anti-fingerprint coating | — |
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| Case | 45.94 x 38.09 x 11.2 mm, 26 g without strap, plastic bottom case, 22mm silicone strap | — |
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| Battery | Up to 10 days typical use (5 days heavy use, 26 days battery saver mode), 300 mAh | Up to 7 days (Fitbit estimate, default settings) |
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| Water Resistance | IP68 | — |
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| OS | Zepp OS 2.0 | — |
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| Sensors | BioTracker PPG biometric sensor (heart rate, SpO2), 3-axis accelerometer, 4 satellite positioning systems | 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 |
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| Connectivity | Bluetooth 5.2 BLE, built-in speaker and microphone for Bluetooth calls | — |
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| Compatibility | Android 7.0+ and iOS 14.0+ via the Zepp app | Android 9.0 or newer, iOS 15 or newer, Google Account required |
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| Features | 120+ sports modes, Amazon Alexa, 70+ mini apps, 24-hour heart rate, SpO2 and stress monitoring, sleep tracking, PAI, menstrual cycle tracking | 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 |
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| Navigation | — | Built-in GPS; Google Maps turn-by-turn directions |
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| Controls | — | Haptic side button |
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| Subscription | — | 6 months of Fitbit Premium included with device |
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| Colors | — | Obsidian, Porcelain, Coral |
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