... at WMAStandby timeup to 50 hoursMusic Playing Time7 hoursNormal Charging TimeWithin 3 hoursBattery3.7V 300mA Rechargeable Li-PolymerPowerImput AC ... -10’C to +55’CSupportsBluetooth Headset,A2DP,HFP,HSP and AVRCP Profiles Features of bluetooth: 1,Top Quality Blutooth ... 3.Can be easily connected to iphone,ipad,PC,cellphones etc.4.Remote playback control function:play/pause, prev/next, volume +/-, ...