| Sizes | 41mm and new 45mm | — |
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| Display | Actua display, up to 2,000 nits peak, down to 1 nit, 60 Hz to 1 Hz always-on; 45mm shows 40% more screen and 41mm 10% more than Pixel Watch 2 (Google claims) | Analog hybrid dial with 0.63" grayscale OLED sub-display (14504 px, 282 PPI) |
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| Battery | Up to 36 hours with Battery Saver Mode (Google claim); 45mm has a 35% bigger battery, 41mm charges 20% faster | Up to 30 days (launch claim; Withings now states up to 35 days), about 2 hours to charge |
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| Software | Wear OS 5, Fitbit health and fitness features, six months of Fitbit Premium included | — |
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| Health | Loss of Pulse Detection, Daily Readiness, Cardio Load, Target Load, running form analysis | — |
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| Connectivity | Bluetooth/Wi-Fi and LTE models, Ultra-Wideband chip | — |
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| Price | 349.99 dollars (41mm) and 399.99 dollars (45mm) Bluetooth/Wi-Fi; 449.99 and 499.99 dollars LTE at launch in the US | — |
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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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| 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 |
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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 |
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| Colours | — | Black, white (38 mm); black (42 mm) |
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