Screen: 1.28 inch 240 * 240 full size full touch screen Battery: 220 mAh polymer Packing box size: 15.1 * 7.5 * 3.0cm Bluetooth: 4.0 Mobile version supported: iOS 9.0 and above Android 5.0 and above Call/SMS content push There are function enabling switches (incoming call, SMS, WeChat, QQ, Facebook, Twitter, LinkedIn, WhatsApp, Line, Instagram, Snapchat, Skype and other mobile applications) and events on the APP side, such as sitting, alarm clock, drinking water, taking medicine, etc., countdown, search mobile phone, bracelet brightness adjustment, bracelet screen duration adjustment, step count, heart rate data synchronization APP support, exercise, mileage, calories, steps, Sleep, total sleep, deep sleep, light sleep time, history, heart rate, blood pressure, sleep, exercise
