| Display | 1.75-inch AMOLED, 390 x 450 pixels (341 ppi), sapphire glass, up to 2,000 nits peak brightness | None - screen-free band with no buttons; data is shown in the Polar Flow app |
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| Case | Square case, stainless-steel bezel with fiber-reinforced polymer body, 43.32 x 36.9 x 9 mm, 2 buttons | — |
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| Weight | 31.4 g (without strap) | — |
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| Strap | 20 mm leather strap with pin buckle (150-210 mm) plus an additional red silicone sport strap (135-195 mm) in the box | — |
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| Battery | Up to 10 days typical use, up to 19 days in battery saver mode, up to 5 days heavy use, up to 21 hours continuous GPS, 260 mAh (rated), magnetic charging base, about 2 hours to charge | Up to 8 days, 170 mAh Li-Pol, USB-C charging cable |
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| Sensors | BioTracker 6.0 PPG heart-rate sensor, accelerometer, gyroscope, ambient light sensor, geomagnetic sensor, temperature sensor, barometric altimeter | Polar Precision Prime optical heart-rate sensor (OHR Gen 3.5), accelerometer; no skin temperature sensing |
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| Positioning | 5 satellite positioning systems with circularly polarised antenna, offline maps with turn-by-turn directions | — |
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| Water Resistance | 5 ATM | — |
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| Connectivity | Bluetooth 5.2 (BLE) | Bluetooth Low Energy (one connection, reserved for Polar Flow); no built-in GPS (uses phone GPS in Polar Flow) |
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| Audio | Built-in microphone and speaker | — |
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| Sports Modes | 160+ sports modes including HYROX race mode, strength-training recognition of 25 movements and 8 sports movements | — |
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| Health Tracking | 24-hour heart rate, blood-oxygen, stress and skin temperature, sleep stages and breathing quality, Readiness score, HRV, PAI, menstrual cycle tracking | — |
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| Smart Features | Zepp Flow voice assistant (select regions), Zepp Coach, Bluetooth music control, call and app notifications, Android quick replies | — |
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| Compatibility | Android 7.0 and above, iOS 15.0 and above, via the Zepp App | — |
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| In the Box | Amazfit Active 2 Square with black leather strap, additional red silicone strap, magnetic charging base (no USB-C cable), instruction manual | — |
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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 |
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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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| 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 |
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