... bluetooth headset 2.Bluetooth 2.1 3.CE,FCC,BQB RoHS 4.HFP,HSP,A2DP,AVRCP 5 ... design Black Mini Bluetooth V2.1 stereo bluetooth headset for Iphone 4,4s,5,Ipad,PC,PS3 ... headphone with internal micOperation Distance10mRange of Frequency2.4 to 2.4835GHz ISM bandSensitivity85dBPC InterfaceUSB2.0Music FormatMP3 ... Latest design Black Mini Bluetooth V2.1 stereo bluetooth headset for Iphone 4,4s,5,Ipad,PC,PS3