Abstract: The “Bluetooth Car Kit” is a new and unique product combining Bluetooth hands-free cell phone calling and USB/SD/MMC supporting FM transmission. The integrated FM Transmitter streams stereo music from its own USB disk, or SD/MMC card through the in-car sound system for music play, playback as well as music select. The “Bluetooth Car Kit” has an audio cable line-in hole which is used to connect any audio device. The “Bluetooth Car Kit” also has the function of hands-free speaking. The “Bluetooth Car Kit” just simply connects to the cigarette lighter socket in the vehicle making it easily transportable. The integrated 1.5 inch LCD display can show multi-information from both of its own USB disk/SD/MMC card as well as the cell phone Bluetooth. The appearance of the “Bluetooth Car Kit” is unique.