Product Parameters: Bluetooth: 5.0 Screen size: 1.53 Screen resolution: 360*360 touch type: full touch screen screen material: TFT supported system: Android 4.4 and above, iOS 9.0 and above Battery capacity: 300mAh charging method: magnetic charging battery type: lithium battery product features: function setting: Call, flexible Island, screen rest time, brightness settings, brightness settings (screen off pointer), button adjustment, raised up to illuminate the screen, vibration intensity, does not interfere with password settings mode, language selection, Power Saving Mode, time and date setting, NFC, phone connection, Bluetooth call, factory reset, restart, power off etc. No disturb Bluetooth switch mode, brightness adjustment, setting, power off, alarm clock, password lock, style change, screen pointer adjustment, notification function: medicine memory, female physiological health memory, water memory, language memory: Chinese, English (Default), Russian, Spanish, German, Italian, French, Portuguese, Polish, Dutch, Greek, Turkish, Romanian, Japanese, traditional Chinese, Hebrew, Czech, Slovak, Hungarian, Arabic, Korean, via, Thai, Persian, Ukrainian, myanmar, please note: wearable devices check human activity through electronic sensors and stay at the level of consumer electronics. please do not compare with hospital equipment, not medical equipment! After received, please charge for 2 to 3 hours after long time delivery. power runs out. do not use high power source or fast charge to charge the watch to avoid damage. recommended to use 5V 1A before use. please read. User Guide and connect to the watch through the app for Android users: Please allow the app to access the desired function by phone and continue working. this smart watch supports life waterproof function, so do not shower, swimming, diving and hot shower. Strict before shipping... so all products can guarantee 100% high quality before shipping! Please contact us. we have products you are looking for. Thanks!