| Display | None - screen-free band with no buttons; data is shown in the Polar Flow app | 1.28-inch AMOLED touchscreen, 416 x 416, always-on option, Gorilla Glass 3 |
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| Body | Stainless steel sensor unit, 42 x 27 x 9 mm; 29 g with band (19.5 g without band); SoftWeave band in S/M and M/L sizes; WR30 water resistance | 45 x 45 x 13.8 mm; 48 g with wristband, 28 g without; bio-based plastic case; 22 mm quick-release strap |
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| Battery | Up to 8 days, 170 mAh Li-Pol, USB-C charging cable | Up to 10 days in smartwatch mode; up to 43 hours with GPS in performance training mode (170 hours in eco mode); 385 mAh, replaceable |
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| Sensors | Polar Precision Prime optical heart-rate sensor (OHR Gen 3.5), accelerometer; no skin temperature sensing | Precision Prime optical heart rate, nightly skin temperature, accelerometer, gyroscope, barometer, magnetometer; no ECG or SpO2 |
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| Tracking | 24/7 heart rate, activity, sleep and recovery tracking; Nightly Recharge, SleepWise, Sleep Plus Stages, Training Load Pro, automatic training detection | — |
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| Memory | 4 weeks of data on the band (16 MB storage) | — |
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| Connectivity | Bluetooth Low Energy (one connection, reserved for Polar Flow); no built-in GPS (uses phone GPS in Polar Flow) | Bluetooth LE; proprietary USB-C charging cable |
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| Software | Polar Flow app (free, no subscription); one-time purchase | — |
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| Colors | Greige Sand, Night Black, Brown Copper; extra bands USD 29.90 | Night Black, Snow White, Forest Green |
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| Positioning | — | GPS, Galileo, BeiDou, QZSS with assisted GPS; barometer, compass; route guidance and back to start |
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| Durability | — | WR50 water resistance; tested to MIL-STD-810H; -20 to 50 °C operation |
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| Sports | — | 170+ sports and activities, Training Load Pro, Nightly Recharge, SleepWise, Sleep Plus Stages |
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| Performance | — | 275 MHz CPU, 5 MB memory, 32 MB storage |
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| Extras | — | Integrated LED flashlight with white and red light; Polar Flow app and web service included |
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