| Display | 1.43" AMOLED, 466 x 466 pixels, 326 ppi, 600 nits default maximum brightness, 2.5D sapphire crystal cover | Flat crystal, up to 3000 nits |
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| Chipset | Dual chip: Qualcomm Snapdragon W5 Gen 1 plus BES2700BP low-power MCU (Dual-Engine Architecture) | Apple S9 SiP, 2nd-gen Ultra Wideband |
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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 | Up to 36 hours; up to about 60 hours in low-power mode |
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| OS | Wear OS 4 plus RTOS | watchOS 10 (at launch) |
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| Water Resistance | 5 ATM, IP68, MIL-STD-810H tested | WR100 / EN13319, recreational dives to 40 m |
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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 | Cellular, dual-frequency GPS (L1 + L5) |
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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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| Case Size | — | 49mm titanium |
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| Health Sensors | — | Heart rate, water temperature, sleep apnea detection, blood oxygen (calculated on paired iPhone) |
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