Screen: 1.3 inchScreen resolution: 240*240 resolution.Battery: 200 mAhWaterproof level: IP67 WaterproofCPU: GR5515Watch Faces: Dynamic watch face, watch face market and DIY watch face (you can set the picture you like as the watch face). UI interface.Suitable for mobile phones with Android 4.4 or higher, or iOS 9.0 or higher.COLMI SKY 8 FunctionsSports: All-Day Activity Tracking, IP67 waterproof, 16 Exercise Modes, Stopwatch, Sports Data Report.Health: 24/7 Heart Rate monitor, BP monitor, Spo2 monitor, Sleep tracker, Breathe.Life: Smartphone Notifications, Alarm clock, support custom watch faces, watch face market (70+ watch faces), Weather, Music remote, Camera remote, Built-in 2 games.With a battery life up to 7 days, keep the inspiration coming day and night.COLMI SKY 8 LanguageEnglish, Chinese, Japanese, Korean, German, French, Spanish, Arabic, Russian, traditional Chinese, Ukrainian, Italian, Portuguese , Polish, Czech.