| Display | 1.43" AMOLED, 466 x 466 pixels, 326 ppi, 600 nits default maximum brightness, 2.5D sapphire crystal cover | 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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| Chipset | Dual chip: Qualcomm Snapdragon W5 Gen 1 plus BES2700BP low-power MCU (Dual-Engine Architecture) | Exynos W1000 (5-core, 3 nm) |
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| RAM | 2GB | — |
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| Storage | 32GB (plus 4GB eMMC for the RTOS) | — |
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| Case | Stainless steel chassis; fluororubber strap with stainless steel buckle; standard 22mm straps supported | — |
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| Size | 47.0 x 46.6 x 12.1 mm (13.65 mm including sensor); about 49 g without strap, about 80 g with strap; fits 140-210 mm wrists | — |
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| Battery | Up to 100 hours in Smart Mode, up to 48 hours with heavy use, up to 12 days in Power Saver Mode; 500 mAh; 10 minutes of charging gives about 24 hours, about 60 minutes for a full charge | 435 mAh (44 mm), 325 mAh (40 mm), 445 mAh (Classic 46 mm) |
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| OS | Wear OS 4 plus RTOS | Wear OS 6 with One UI 8 Watch; Gemini out of the box |
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| Water Resistance | 5 ATM, IP68, MIL-STD-810H tested | — |
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| Positioning | Dual-frequency L1+L5 GPS: BeiDou, GPS, Galileo, GLONASS, QZSS | — |
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| Connectivity | Wi-Fi 2.4/5GHz, Bluetooth 5.0 and BLE, NFC, Bluetooth calling in both modes | LTE models, Bluetooth 5.3, Wi-Fi, NFC, L1+L5 dual-frequency GPS |
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| Sensors | Accelerometer, gyroscope, optical heart rate, optical pulse oximeter, geomagnetic, light, barometer | — |
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| Payments | Google Wallet | — |
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| Sports Modes | 100+ sports modes | — |
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| Compatibility | Android 8.0 or later with GMS 23.45.23 or later; iOS and Android (Go edition) not supported | — |
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| Colors | Black Steel, Radiant Steel | — |
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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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| 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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