Case material: Plastic Strap material: silicone Screen type: TFT Screen size: 1.46 inches Screen resolution: 360*360 Touch form: Full touch Battery capacity: 300 mah Battery life: 5-10 days, standby 45 days Charging time: about 2 hours Main control chip: JL7012 Gravity sensor: SC7A20 Heart rate sensor: HX3918 Blood oxygen sensor: HX3918 RAM: 640KB FLASH:128M Motor: Flat tungsten steel motor Button: knob + double button Bluetooth: BT5.3 Bluetooth distance: 10 meters Charging mode: magnetic charging Waterproof rating: IP67 Exercise modes Support 100+ exercise modes, calorie counting, step counting, distance, exercise recording, Mete. Health function support: MAI Health Index, automatic measurement, heart rate monitoring, blood oxygen monitoring, blood oxygen study, sleep monitoring, exercise heart rate, women's health, health reminders, live detection. Communication function support: Bluetooth call, message notification, event reminder, weather, voice assistant, music control, remote control photo. Software functions support app market, breathing training, World clock, tomato clock, alarm clock, calculator, timer, stopwatch, flashlight, calendar, find mobile phone APP name: Runmefit Compatible systems: IOS 9.0 and above, Android 4.4 and above Support Google Health, Apple Health, dial market, support more than 200 dial custom download OTA upgrade: Supported APP language support: Simplified Chinese, Traditional Chinese, English, Japanese, Italian, German, Spanish, French, Russian, Korean, Thai and other more than 20 languages Watch language support: Simplified Chinese, Traditional Chinese, English, Japanese, Italian, German, Spanish, French, Russian, Korean, Thai, Dutch