... 180H6.Internal,nonremovable,rechargeable battery7.No wires,no limits,bluetooth wireless headset8.True freedom talk wirelessly in office or ... ,mute function ,more attractive10.CE,FCC,RoHS approvalProduct Specification:Bluetooth Version: v2.1+EDR Profiles: Headset, Handsfree, AVRCP ... 4 Hours Standby Time: 180 Hours Compatibility/Pairing: All Bluetooth devices V2.1 and under Power Source: Built in ...