| Display | Analog hybrid dial with 0.63" grayscale OLED sub-display (14504 px, 282 PPI) | Actua 360 domed display, 3000 nits, 10% larger active area, 16% smaller bezels |
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| Case | 38.4 mm (34.6 g) or 42 mm (52.6 g) stainless steel, sapphire glass, 18/20 mm FKM wristband | — |
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| Battery | Up to 30 days (launch claim; Withings now states up to 35 days), about 2 hours to charge | 30 hours (41mm) / 40 hours (45mm); up to 2 / 3 days in Battery Saver mode; 0-50% in 15 minutes |
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| Water Resistance | 5 ATM (50 m) | — |
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| Health Sensors | ECG, SpO2, TempTech 24/7 skin temperature, multi-wavelength PPG (4 wavelengths, 16 channels), HDR accelerometer | Heart rate, ECG assessment, skin temperature sensor, loss of pulse detection, sleep tracking |
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| Features | AFib detection, heart rate variability, respiratory rate, menstrual cycle logging, 40+ automatic activities, VO2 max | — |
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| OS | HealthSense, iOS 15+ / Android 9+ compatible | Wear OS with Gemini (Raise to Talk) |
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| Colours | Black, white (38 mm); black (42 mm) | — |
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| Case Size | — | 41mm / 45mm aerospace-grade aluminium, water resistant to 50 m |
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| Chipset | — | Qualcomm Snapdragon W5 Gen 2 with ML co-processor |
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| Connectivity | — | Wi-Fi and LTE models, dual-frequency GPS; LTE model with standalone satellite emergency communication |
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