... .Black Mini Bluetooth V2.1 Stereo Headset Headphone 2.Bluetooth 2.1 3. ... Latest design Black Mini Bluetooth V2.1 Stereo Headset Headphone for Iphone 4,4s,5,Ipad,PC, ... reference: Specifications of bluetooth: Bluetooth VersionV2.1TypeStereo headphone with internal micOperation Distance10mRange of Frequency2.4 ... : Latest design Black Mini Bluetooth V2.1 Stereo Headset Headphone for Iphone 4,4s,5,Ipad,PC,PS3 ...