| Display | 1.72" AMOLED touchscreen, 212x520, 60Hz, up to 1,500 nits (HBM), 2.0 mm bezels | Super AMOLED with full-colour always-on display; 1.47-inch (44 mm) or 1.34-inch (40 mm, 46 mm Classic); sapphire crystal; up to 3,000 nits (Samsung claim) |
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| Body | 46.57 x 22.54 x 10.95 mm (without sensor), 15.95 g without strap; aluminium alloy frame with TPU strap; Ceramic Edition 23.05 g; fits 135-210 mm wrists | 8.6 mm thick and 30-34 g (Watch8); 10.6 mm and 63.5 g (Classic); 5ATM + IP68 / MIL-STD-810H |
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| Battery | Up to 21 days (typical use), up to 9 days with always-on display, up to 8 days heavy use; 233 mAh, magnetic charging in about 1 hour | 435 mAh (44 mm), 325 mAh (40 mm), 445 mAh (Classic 46 mm) |
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| Sensors | Accelerometer, gyroscope, compass, optical heart-rate and SpO2 sensor, ambient light sensor | — |
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| Connectivity | Bluetooth 5.4 | LTE models, Bluetooth 5.3, Wi-Fi, NFC, L1+L5 dual-frequency GPS |
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| Durability | 5 ATM water resistance | — |
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| Sports | 150+ sports modes, real-time heart rate while swimming, heart rate broadcast | — |
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| OS | Mi Fitness app; compatible with Android 8.0+ and iOS 14.0+ | Wear OS 6 with One UI 8 Watch; Gemini out of the box |
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| Sizes | — | Watch8 in 40 mm and 44 mm (Graphite, Silver); Watch8 Classic in 46 mm (Black, White) |
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| Chipset | — | Exynos W1000 (5-core, 3 nm) |
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| Memory / Storage | — | 2 GB memory, 32 GB or 64 GB storage depending on model |
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| Health | — | Samsung BioActive Sensor, temperature sensor, Antioxidant Index, Bedtime Guidance, Vascular Load, Running Coach |
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