Xiaomi

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Full colour AMOLED touch display View call, text, and app notifications Activity and swim tracking Water resistant up to 50m*； 3-axis accelerometer, 3-axis gyroscope Up to 20 days battery* A single charge lasts up to 20 days.
Instantly view call, text, app notifications and music in play. Keep your hands free as you keep up with life.

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✔✔【Upgrade 0. 95″ Color Screen】: Note: OllivanDirect is authentic seller authorized by xyloma, Please make sure you buy from OllivanDirect】Bigger screen displays a comprehensive and obvious activity information; Simply lift your wrist to view directly the time and tap the button for steps, heart rate and other activity information; And alerts you by vibration and it can display details of calls, messages or other notifications from Facebook, Twitter or WeChat directly on the screen
✌【Upgrade 135mAh battery capacity】: with built in 135mAh Lithium Ion polymer battery, long battery life, Charge it once, the battery will last for over 20 days under normal use; with a skin-friendly strap Made from soft thermoplastic elastomer, and a secure locking mechanism that makes the MI band 4 comfortable to wear during low and high intensity activities