Allow calls via Bluetooth System compatibility: iOS 8.0 and higher, Android 4.4 and higher, and iOS 8.0 FLASH memory: RAM 192 KB 1.95-inch screen with HD 240*280 pixels Full touch screen is the type of touch. Battery: 200 mAh Wireless charging is the method of charging. IP68 is the waterproof level. Ten days of Battey life Language: 14 fixed languages, though the app allows users to select more than one. Composition: silicone wristband