| Size | 46 mm: 46.4 x 46.4 x 10.9 mm (Space Edition 11.4 mm), about 57 g (Space Edition 60 g), strap excluded; 43 mm: 43.5 x 43.5 x 10.2 mm, about 50 g | — |
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| Display | 46 mm: 1.5-inch LTPO 2.0 AMOLED, 466x466, 310 ppi; 43 mm: 1.38-inch LTPO 2.0 AMOLED, 466x466, 338 ppi; up to 3,500 nits peak (Huawei lab figure); spherical sapphire glass | 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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| Case | 46 mm: titanium alloy front, ceramic rear; 43 mm: ceramic front and rear; titanium, ceramic or composite straps | — |
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| Battery | Up to 4.5 days typical (46 mm), up to 3 days with always-on display; 43 mm: up to 3 days typical, 2 days always-on; Battery saver mode up to 11 days light use (46 mm) or 7 days (43 mm); wireless charging (Huawei lab tests) | 435 mAh (44 mm), 325 mAh (40 mm), 445 mAh (Classic 46 mm) |
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| Durability | 5 ATM, IP69, free-dive rated to 40 m (EN13319) | — |
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| Sensors | 12-channel optical heart rate (X-TAP), ECG, temperature, barometer, depth, accelerometer, gyroscope, compass, ambient light | — |
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| Positioning | Dual-band GPS (L1+L5), GLONASS, BeiDou, Galileo, QZSS | — |
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| Connectivity | eSIM cellular, Bluetooth 5.2, NFC, NearLink, Wi-Fi 2.4 + 5 GHz, speaker and microphone | LTE models, Bluetooth 5.3, Wi-Fi, NFC, L1+L5 dual-frequency GPS |
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| OS | Huawei watch software with the Huawei Health app; works with Android 9.0+ and iOS 13.0+ | Wear OS 6 with One UI 8 Watch; Gemini out of the box |
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| Colors | 46 mm: Space Edition, Silver, Brown; 43 mm: Ceramic Edition, White | — |
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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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| Body | — | 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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| Health | — | Samsung BioActive Sensor, temperature sensor, Antioxidant Index, Bedtime Guidance, Vascular Load, Running Coach |
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