| Display | 1.3-inch always-on AMOLED touchscreen, 416x416, up to 1,500 nits, mineral glass | 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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| Processor | Ambiq Apollo510 (COROS claims more than twice the processing power of the PACE 3) | — |
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| Battery | Up to 20 days of daily use (up to 6 days with always-on display); up to 38 hours of GPS in All Systems mode (28 hours with always-on display); up to 31 hours in dual-frequency mode; under 2 hours to charge | Up to 36 hours with Battery Saver Mode (Google claim); 45mm has a 35% bigger battery, 41mm charges 20% faster |
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| Body | 46 x 46 x 12.25 mm; 37 g with nylon band, 49 g with silicone band; fiber-reinforced polymer case and bezel; 22mm quick-release bands | — |
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| Positioning | All-satellite dual-frequency GNSS (GPS, GLONASS, Galileo, BeiDou, QZSS), downloadable global maps with turn-by-turn navigation | — |
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| Sensors | Optical heart rate and SpO2, electrical heart rate sensor for HRV, barometric altimeter, accelerometer, gyroscope, 3D compass, thermometer | — |
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| Controls | Touchscreen, digital dial and back button | — |
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| Memory | 32GB internal storage, about 1,200 hours of activity memory (COROS estimate) | — |
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| Connectivity | Bluetooth, Wi-Fi for data sync and firmware updates, offline music playback with supported Bluetooth headsets | Bluetooth/Wi-Fi and LTE models, Ultra-Wideband chip |
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| Water resistance | 5 ATM (surface water activities, not for diving) | — |
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| Charging | USB-C (cable not included) | — |
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| Colors | Black, Grey, Blue | — |
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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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