5ive&Acirc; S9 Sport Wireless Bluetooth Headphone with Built-in Mic for iOS/Android/Windows Heavy bass effect, enables you to enjoy Beautiful Music in a better way. Built-in lithium battery (Charge via USB) and Mic,offers handsfree talk. Portable back-hang design,good for sports. Not only connect with two mobiles at the same time, but also control them simultaneously Very simple,various colors optional.