Detailed Product Description Model:Bluetooth headsets BTH-310Bluetooth specification:V1.2 Class 2Bluetooth protocol:HSP.HEP.A2DP.AVRCPFrequency Range:2402-2480MHZWorking Distance:10mKey:Main function key,Volume+,Volume-,Play/Pause,Previous,NextMain Function:Receive a call, Reject a call,End a call,Voice dial, Last number redial,Cancel a call , Player remote controlDimension:55*28*9.6(mm)Weight: ...