1)Bluetooth V2.1 2)Full Duplex Sound Quality 3)Sun Visor Clip Design 4)Multipoint support 5)One-touch answer Bluetooth V2.1;Full Duplex Sound Quality;Features latest CVC echo/noise reduction for reducing background noise.;Sun Visor Clip Design ;Multipoint support, can connect to more than two cell phones at the same time;One-touch answer, call rejection, last number redial, adjustable volume; ...