| 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) | Actua 360 domed display, 3000 nits, 10% larger active area, 16% smaller bezels |
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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 | 30 hours (41mm) / 40 hours (45mm); up to 2 / 3 days in Battery Saver mode; 0-50% in 15 minutes |
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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 | Wi-Fi and LTE models, dual-frequency GPS; LTE model with standalone satellite emergency communication |
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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 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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| Health Sensors | — | Heart rate, ECG assessment, skin temperature sensor, loss of pulse detection, sleep tracking |
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| OS | — | Wear OS with Gemini (Raise to Talk) |
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