... 2.Bluetooth 2.1 3.CE,FCC,BQB RoHS 4.HFP,HSP,A2DP,AVRCP 5.MOQ:50PCS Latest ... Headset - Retail Packaging - Black for Iphone 4,4s,5,Ipad,PC,PS3 Our catalog for your reference: ... headphone with internal micOperation Distance10mRange of Frequency2.4 to 2.4835GHz ISM bandSensitivity85dBPC InterfaceUSB2.0Music FormatMP3 ... music or movie with up to 7 hours. 6.Covert between music and phone calling mode freely ...