... , High quality Products descriptionBluetooth wireless headsetSupport systems:audio equipments with bluetooth functions,such as PC,cellphone,MP3…Bluetooth standards: Bluetooth V2.1+EDRReceiver range ... : ≤2.2KΩ Frequency Response:30Hz-16.000HzOperating voltage:3.0v Wireless stereo bluetooth headphone foldable new style for computer, PC, Ipad, Ipod ...