| Type | Screenless fitness, sleep and recovery tracker worn on the upper arm or wrist, no display | — |
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| Display | None (screenless, all data is read in the Zepp App) | — |
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| Sensors | BioTracker 6.0 PPG optical heart-rate sensor (5PD + 2LED), accelerometer, gyroscope, temperature sensor | 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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| Battery | Up to 10 days typical use, 232 mAh (rated), magnetic charging head | Up to 7 days (Fitbit estimate, default settings) |
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| Water Resistance | 5 ATM | — |
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| Connectivity | Bluetooth 5.2 (BLE) | — |
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| Dimensions | 33.97 x 24.3 x 10.59 mm (without sensor) | — |
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| Weight | 20 g | — |
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| Body Material | Fiber-reinforced polymer | — |
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| Strap | 22 mm nylon strap with hook-and-loop fastening, fits 145-205 mm | — |
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| Sports Modes | 50+ sports modes via the Zepp App, 25 recognised strength movements, HYROX race mode | — |
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| Health Tracking | Continuous heart rate (per second), blood-oxygen, stress, sleep stages including REM, naps, sleep breathing quality, sleep score, BioCharge energy score, PAI, heart-rate recovery | — |
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| Heart-Rate Broadcast | Real-time heart rate over Bluetooth to compatible watches, bike computers, gym equipment and apps; offline heart-rate storage up to 21 days | — |
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| Compatibility | Android 7.0 and above, iOS 15.0 and above, via the Zepp App | Android 9.0 or newer, iOS 15 or newer, Google Account required |
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| In the Box | Helio Strap with assembled strap, magnetic charging head (no cable), instruction manual | — |
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| Subscription | No required monthly subscription | 6 months of Fitbit Premium included with device |
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| Navigation | — | Built-in GPS; Google Maps turn-by-turn directions |
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| 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 |
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| Controls | — | Haptic side button |
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| Colors | — | Obsidian, Porcelain, Coral |
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