Name Bluetooth Stereo Headset Model No. TM840 Product Description Features: 1) Stereo music listening time: 14 hours 2) Phone call talk time: 17 hours 3) Standby time: 500 hours 4) Left ear side of the headset controls the phone and the right controls music 5) Right side of the headset: skip reverse button, skip forward button, play / pause / stop button 6) Left side of the headset: volume up button, volume down button, multifunction button (answer and end calls)