| Display | 1.43-inch 466x466 OLED always-on (326 ppi) plus ultra-low-power display, sapphire crystal cover | 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) |
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| Chipset | Snapdragon W5+ Gen 1 (4nm SoC + 22nm co-processor) | — |
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| RAM | 2GB | — |
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| Storage | 32GB | — |
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| Battery | Up to 90 hours (Smart Mode) / up to 45 days (Essential Mode), 628 mAh typical | Up to 36 hours with Battery Saver Mode (Google claim); 45mm has a 35% bigger battery, 41mm charges 20% faster |
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| OS | Wear OS by Google (Wear OS 3.5) | — |
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| Water Resistance | 5ATM, MIL-STD-810H | — |
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| Connectivity | Bluetooth 5.2, Wi-Fi 2.4 GHz, NFC | Bluetooth/Wi-Fi and LTE models, Ultra-Wideband chip |
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| GNSS | GPS, BeiDou, GLONASS, Galileo, QZSS | — |
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| Sensors | Accelerometer, gyro, HD PPG heart rate, SpO2, skin temperature, off-body, barometer, compass | — |
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| Case | Stainless steel, 7000-series aluminum, nylon with fiberglass, 24 mm fluororubber strap | — |
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| Dimensions | 50.15 x 48.0 x 11.95 mm | — |
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| Weight | 44.7 g without band | — |
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| Colors | Obsidian, Slate | — |
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| Sizes | — | 41mm and new 45mm |
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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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| 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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