| Display | 1.39-inch AMOLED touchscreen, 454 x 454, 326 ppi, sapphire crystal glass, always-on option, ambient light sensor | — |
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| Body | 48.6 x 48.6 x 13.4 mm; 79 g with wristband (57 g without); stainless steel case and bezel; 22 mm quick-release wristbands; WR100 water resistance; MIL-STD-810H tested; -20 to 50 C operating temperature | — |
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| Battery | Up to 11 days in smartwatch mode; up to 40 hours in performance training mode; up to 110 hours in eco training mode; 488 mAh rechargeable Li-Pol battery (Polar's launch announcement quoted up to 10 days, 43 hours and 140 hours) | — |
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| Storage | 32 GB for training data, offline maps and routes | — |
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| Sensors | Polar Elixir biosensing: 4th-generation optical heart rate, wrist-based ECG, SpO2, nightly skin temperature; barometer, magnetometer compass, accelerometer, gyroscope | — |
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| GPS | Dual-frequency GPS with GLONASS, Galileo, BeiDou and QZSS | Apple states the most accurate on-device GPS in a sports watch |
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| Navigation | Preloaded maps of Europe and North America, downloadable regions and contour maps in Polar Flow, Breadcrumbs, turn-by-turn navigation powered by komoot, Strava route sync, Track Back, Back to Start | — |
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| Connectivity | Bluetooth LE, USB-C charging cable (proprietary connector) | Satellite Emergency SOS, Find My and Messages (free for two years with activation) |
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| Software | Polar Flow app; Training Load Pro, Recovery Pro, Nightly Recharge, SleepWise, FitSpark, FuelWise, Hill Splitter, orthostatic and running tests | watchOS 27 with Siri AI |
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| Extras | Built-in flashlight; wrist-based running power; vertical speed, VAM and 3D speed | — |
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| Colors | Night Black, Stone-Gray; Grit X2 Pro Titan edition with titanium front casing and an extra leather wristband | — |
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| Case | — | Natural and black titanium (3D-printed, 100 percent recycled titanium) |
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| Chip | — | S11 |
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| Health Sensors | — | Health Sensing System: optical and electrical heart sensors, heart rate every five seconds |
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| Battery (everyday) | — | Up to 50 h; up to 84 h in Low Power Mode |
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| Battery (workout) | — | Extended Workout up to 25 h; Max Extended Workout up to 45 h with GPS every second |
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| Charging | — | 15 minutes adds up to 18 h of battery life |
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| Price | — | From $799 in the U.S. |
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