It can connect two equipments at the same timeVibration reminding when phone call comes inReceiving earplugs via Magnetic suction automaticallyDelivers enhanced audio and bass response and a host of calling features in a sleek, comfortable designBuilt in apt-X technology reproduces CD quality sound over a Bluetooth connection ,Unique, around the neck, wearing style provides all day comfort and ease of useHigh quality stereo bluetooth Wireless headset with music & phone functions. Surround type design is convenient to carry, more comfortable than other brands 9mm high fidelity audio earplugs, life like clear sound Speaking key, Volum control keys, the music key. Up/down song keys