Enjoy your music wirelessly like never before with clear, full range sound and enhanced bass from the acoustically advanced driver and specially tuned Bluetooth audio chip. Never missed a phone call with full headset functionality and built-in hidden microphone. Ultra-soft padding and lightweight adjustable headband provide extreme comfort for long term wear. Compact design, folding headband, and included travel bag allow for easy storage and transport. No wires to limit listening. Connect the or CMBH-9288 to compatible Bluetooth mobile devices like laptops, mobile phones or portable media players, and experience wireless audio from up to 10 metres anywhere in your home or outdoors. The connection interferes with wall or other electronic device which is normal in BT technology. The headphone comply with Bluetooth criterion 2.1 version and EDR (enhanced data rate).