Get hands on the most compact, intense voice output yet energy saving, bluetooth-driven KDM Wireless Speaker series that are created to give you the experience of what the ultimate audio anent technology feels like. Compatibility : Compatible with all mobile phones, music players, portable gaming devices and computers Play USB storage devices : Yes Mic : Built in mic for hands free calling function Splash proof : Yes Color : Available in 6 different colour. Playing time : 6 hr Charging time : 2 hr Rated power : 5w*2 Input current : 1000mA Colors : Black, Grey, Red, Yellow