XMSH05HM MI Band 3 Wristband material:thermoplastic elastomer Clasp material:aluminum alloy Compatible Operating System:Android, iOS - Apple Compatible with:Android 4.4 or iOS 9.0 or later Band Material:Thermoplastic Elastomer Battery capacity:110mAh Band Color:Black Battery type:Li-ion... XMSH05HM MI Band 3 Wristband material:thermoplastic elastomer Clasp material:aluminum alloy Compatible Operating System:Android, iOS - Apple Compatible with:Android 4.4 or iOS 9.0 or later Band Material:Thermoplastic Elastomer Battery capacity:110mAh Band Color:Black Battery type:Li-ion polymer battery Features:Fitness Tracker, Heart Rate Monitor, Sleep Monitor, Waterproof, Sedentary Reminder, Time, Call Reminder, Push Message, OLED Touchable 0.78” OLED touch screen Call and Notification Alert: Read messages and receive call notification & alerts from applications such as Uber, WhatsApp etc Continuous Heart rate monitoring, sleep analysis and advanced step tracking Find my phone feature: Ring your phone, if it is misplaced 5ATM - Water resistant upto 50 metres Phone Unlock feature (Android Only)