The HTC Car Mic-Bluetooth Visor Speakerphone CAR V100 operates as a large speaker and Mic within a compact, attractive design. Connect your phone wirelessly via Bluetooth to the Car Mic, and enjoy the convenience and safety of talking and listening hands-free. This compact universal accessory is easily clipped onto the cars sun visor for convenient use. It offers great sound quality and a dual Mic with noise cancellation so both you, and the person on the other end can enjoy clear, uninterrupted conversations. Key Features Full duplex audio, Voice command/prompt function, Text to speech for caller ID and phonebook navigation, Dual-Mic noise cancellation, Auto-pairing and multiple point supported and Power, mute, answer/end and volume buttons. This device is compatible with these models HTC One S, HTC One X & HTC One V.