Melvintang(TM) V4.0 Stealth Bluetooth Stereo Voice Control General Headset for Smartphone (Silver) This money can be switch in both English and Chinese, according to call after pairing key + volume key can be arbitrary switching Have more light and delicate appearance and experience unprecedented comfortable wearing Double microphones and DSP technology can block background music.Thus did not call each other to provide the best quality as soon as possible 360 degree of noise reduction, breakthrough extrasensory quality can ensure your phone voice clear message to the other party More standby phone support, multipoint connection