... timeup to 50 hoursMusic Playing Time7 hoursNormal Charging TimeWithin 3 hoursBattery3.7V 300mA Rechargeable Li-PolymerPowerImput AC 100-240V, output DC ... HFP,HSP and AVRCP Profiles Features of bluetooth: 1,Top Quality Blutooth Headset with Microphone.2.High Defition bluetooth headset ... sample confirmation More Pictures: Latest design Black Mini Bluetooth V2.1 stereo bluetooth headset for Iphone 4,4s,5, ...