Features:*Equipped with BT Version 4.1, low power consumption, quick connection speed which brings you an unprecedented experience.*Waterproof design enables you to enjoy outdoor sports in rainy days and swimming, no worry about water.*Built-in microphone enables hands-free calls to set free your hands when doing sports.*Hifi sound quality. Battery display. Also supports high phone call quality.*With 16G memory, it is convenient to use when the mobile phone is not in your hands.