Polar Grit X2

The Polar Grit X2 features a 1.28″ OLED/AMOLED always-on display with a resolution of 416 x 416 pixels and a pixel density of 462 ppi, protected by sapphire glass — notably, it does not use branded damage-resistant glass. The touchscreen case measures 44.7 mm in both height and width, sits 12.5 mm thick, and weighs 62 g, with a volume of 24.976125 cm³. It carries a waterproof rating to 50 meters, and the 22 mm watch band is replaceable. Operating temperatures range from -20 °C at the low end to a maximum of 50 °C.

The Polar Grit X2 comes equipped with a broad set of sensors, including GPS, a heart rate monitor, and a pulse oximeter for tracking blood oxygenation levels. A barometer, compass, accelerometer, gyroscope, and body temperature sensor round out the hardware, covering navigation, motion, and environmental awareness. The watch does not include a cadence sensor or a perspiration monitor.

The Polar Grit X2 covers a wide range of activity tracking capabilities, including route tracking, distance, pace, elevation, and step counting, alongside multi-sport mode and automatic activity detection. It features trackback mode for retracing routes, exercise tagging, and a swim stroke counter, while calorie intake tracking adds a nutritional dimension to daily monitoring. Sleep tracking comes with dedicated sleep reports for a fuller picture of recovery. The watch is not designed for diving or golf.

The Polar Grit X2 connects to both iOS and Android devices via Bluetooth 5.1, covering the primary means of syncing with a paired smartphone. It does not include a cellular module, Wi-Fi, NFC, or ANT+ support.

The Polar Grit X2 is powered by a 310 mAh rechargeable battery that delivers up to 7 days of general use or 30 hours in training mode. It supports wireless charging and has a non-removable battery. Solar charging is not available.

The Polar Grit X2 offers a thorough set of health and performance features, including HRV tracking, VO2 max measurement, resting heart rate monitoring, fast/slow heart rate notifications, and a readiness and recovery indicator. Map uploads and fast GPS lock with Galileo support address navigation needs, while wrist notifications, vibrating alerts, a silent alarm, and a stopwatch handle everyday utility. On the hardware side, internal storage is 32 GB, RAM is 0.037 GB, and the processor runs at 1 x 0.275 GHz. The watch carries a one-year warranty. It does not support irregular heart rate warnings, fall detection, a smart alarm, call control, the ability to answer calls, phone location, voice commands, or a camera remote shutter.

The companion app for the Polar Grit X2 is free and ad-free, offering a broad range of tools including activity reports, an exercise diary, goal setting, coaching, and an achievements system. It tracks calories burned, weight, water intake, and temperature, and supports inactivity alerts, voice feedback, music playback, widgets, and calendar syncing. Route support and a library of 130 exercises extend its training utility, while period notifications, fertile window notifications, ovulation prediction, start date prediction, and a barcode scanner are not included.

The Polar Grit X2 includes ECG technology, a battery level indicator, auto pause, and compatibility with external heart rate monitors. The associated software is available on PC, though the watch is not compatible with Windows or Mac OS X directly. The device is not designed for kids and lacks an external memory slot and a 3.5 mm audio jack.