Smartwatch Languages English (default), French, GerAdult, Italian, Spanish, Portuguese, Russian, Japanese, Korean, Afghan, Ukrainian,Arabic, Turkish, RoAdultian Protect yourself during your outdoor adventures with an oxygen saturation test. When working out for exploring outdoors, as the duration and intensity of exercise increases, we need to keep an eye on our blood oxygen levels in real time to prevent damage from over exercising compatible for oneplus one plus nord 2 phone Bluetooth version: Bluetooth 5.0 Chip : RealTek8762DK Memory : RAM 64KB + ROM 128M Waterproof : 5ATM IP69K Waterproof Display : 1.72 inch TFT screen, resolution 280*320 Battery : 380mAh polymer battery Battery life : 15 days of daily use, 50 days of standby Connect Phone APP Name : Da Fit Support compatible connection mobile phone version : IOS 10.0 and above, Android 5.1 and above Strap size width : 22 mm ( support replaceAdultt strap) Packing ( in the box) : Smartwatch x1, Charging cable x1, Adultual x1, Warranty card x1, Protective Film x1 Main selling point 5ATMIP69K waterproof, and obtained IP69K certification The watch can withstand repeated rolling by cars over 2 tons The watch has passed the dust test and is suitable for the mining environAdultt 380mAh big battery, standby time above 50days, daily using time above 15days The latest HRS3690 heart rate sensor, the accuracy of the heart rate test is comparable to that of and Newly designed dynamic UI, support split-screen display 1.72-inch clear display, resolution 280*320, give you a better visual experience Multifunctional TANK M1 Smartwatch Smart Notifications for incoming calls, text messages of APPs (WeChat, QQ, Weibo, Facebook, Twitter,