| Display | 1.82" AMOLED, 480x408 (347 ppi), 60Hz, up to 1500 nits, 77.4% screen-to-body | Flat crystal, up to 3000 nits |
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| Battery | Up to 10 days (7 days typical use, 4 days with always-on display), 400 mAh, magnetic charging | Up to 36 hours; up to about 60 hours in low-power mode |
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| Dimensions | 43.2 x 36.3 x 9.9 mm, approx. 26 g without strap | — |
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| Case | Aluminium alloy | — |
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| Controls | Rotating crown and function button | — |
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| Sensors | 9-axis IMU (accelerometer, gyroscope, magnetometer), optical heart rate sensor, ambient light sensor | — |
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| Health and Fitness | Heart rate, SpO2, sleep and respiratory monitoring, pulse wave arrhythmia analysis, built-in GPS, 100+ workout modes | — |
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| Connectivity | Bluetooth 5.2 (BR and BLE), Bluetooth calling, NFC (white leather and grey models only), built-in GPS | Cellular, dual-frequency GPS (L1 + L5) |
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| Water Resistance | 5 ATM | WR100 / EN13319, recreational dives to 40 m |
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| Compatibility | Android 8.0 or later, iOS 13.0 or later | — |
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| Colors | Gold (white leather strap), Silver (grey nylon, green or white strap), Pink, Tarnish (black) | — |
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| Case Size | — | 49mm titanium |
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| Chipset | — | Apple S9 SiP, 2nd-gen Ultra Wideband |
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| Health Sensors | — | Heart rate, water temperature, sleep apnea detection, blood oxygen (calculated on paired iPhone) |
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| OS | — | watchOS 10 (at launch) |
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