Designed to mount on the inside of the steering/driving wheel - Comes with a free detachable auto-charging Bluetooth Wireless Earpiece - 1.3" LCD display with Caller ID feature - Powered by 3rd generation CSR Bluetooth design - Supports HSP HFP A2DP AVRCP Bluetooth profiles - Plays music and transmits to car stereo (radio) system - Accepts the following inputs: Stereo Bluetooth A2DP/AVRCP devices MicroSD/Transflash TF cards containing MP3 files (up to 4GB). The card is not included - Full range FM transmission channels selection: 87.5-108.0MHz - Quick access buttons: play pause volume up/down next/prev track answer hang up etc - Built-in rechargeable lithium battery - Wireless earpiece automatically recharge when stored inside the hands free device - Car charger and English user's guide included