E07 Bluetooth 4.0 Sports Smart Bracelet IP67 Waterproof Fitness Tracker Smartband Call Reminder for Andro OS Compatibility: Android 4.3 / iOS 7.0 and above systems with BT4.0 Screen Size: 0.96 inch OLED Battery Type: 90mAh rechargeable Li-ion polymer battery Standby Time: About 90 days Package Content: 1 x E07 Smart Bracelet, 1 x Charging Dock, 1 x English Manual Parts: 6 months Labor: seller Electrical Outlet Plug Type: USA plug