Gainbang K37 smartwatch arrives with built-in GPS and 40-day battery life

The Gainbang K37 smartwatch is available worldwide via AliExpress. The company bills the wearable as an outdoors sports watch, with built-in GPS navigation and over 20 sports modes available. The device looks similar to the Amazfit T-Rex 2, though the K37 is likely to under-perform in comparison.

The company suggests the device can take accurate blood oxygen readings via a built-in SpO2 monitor. Also reportedly included on the K37 is a heart rate monitor, and you can use the gadget to track your sleep quality. Other features include call notifications, weather reports, music controls and a reminder to drink water.

The gadget has a 1.32-in IPS screen and a 360 x 360 px resolution. The watch comes with a silicone strap and is rated as IP68 waterproof, meaning you can wear it while swimming. Gainbang claims that the 480 mAh battery provides 40 days of life in standby mode. You can connect the K37 to your smartphone via Bluetooth 5.0, and the gadget is compatible with Android 4.4 and iOS 8.0 and above.

You can currently buy the Gainbang K37 smartwatch via AliExpress for US$44.27. According to the listing, the wearable will retail for US$90.35 in the future. The gadget is available in gray, black and green, with delivery to the US expected in September.

Buy the Amazfit T-Rex 2 on Amazon