Support Bluetooth calls Compatible system: Android 4.4 and above and IOS8.0 and above;andIOS8.0 FLASH memory: RAM 192KB Screen size: 1.95 inch Pixel: HD 240*280 Touch type: full touch screen Battery: capacity 200mAh Charging method: wireless charging waterproof level: IP68 Battey life 10 days Language: Fixed 14 Languages (APP can choose multiple languages) Material: silicone strap