... -use bluetooth 3.Delicate and simple design 4.Excellent sound Features of Bluetooth Headset:1.stylish and elegant appearance ... without hook ,very comfortable3.redial the last call,clear sound,reject call,volume adjustable4.faster connecting ,convenient to listen ... .Internal,nonremovable,rechargeable battery7.No wires,no limits,bluetooth wireless headset8.True freedom talk wirelessly in office or in ...