Main function (Major function) , Bluetooth call, screen time, do not disturb mode, menu style, language switching, APP QR code, sound Settings, power off, device search, timer, stopwatch, alarm clock, settings, music player (with local playback), recording function, step counting, heart rate, exercise (outdoor running, outdoor walking, indoor cycling, indoor running, indoor walking) , free exercise), blood oxygen, sleep monitoring, information notification, dial switching,system menu, APP connection QR code, watch information, phone book, brightness setting, restart, call history, Remote camera, calculator, voice assistant, QR code for payment, support mobile APP OTA upgrade. Notifications: WeChat, QQ, Information, Twitter, Gmail, Instagram, Facebook, WhatsApp, others. Compatible System Android5.0 or above IOS9.0 or above Screen size (screen size) 1.28 Pixel (Resolution) IPS 240*240 Capacity 3.7V/240mAh language: Language" Simplified Chinese, English, French, Spanish, Portuguese, Russian, German, Dutch, Turkish, Malaysian, Polish, Czech, Slovak, Arabic, Italian, Thai Waterproof Level :IP67waterproof Charging time :2HLife time: 5-7 days in use, 30 days in standby