Check the listing for details. Car MP3 Player Wireless FM Transmitter USB SD Card Jack....silver. Condition: New. Listed at 7.60 USD. Car MP3 Player Wireless FM Transmitter USB SD Card Jack Product details: Apply for Flash Drive and MP3 Player For Flash Drive (USB only) For use with MP3,CD,or DVD players Suit for SD card,USB Multi FM channels 12 volt wireless transmission LCD show the volume and ordinal number of song Turn your car stereo on and tune the frequency the same as your car MP3 botton of the Car Mp3 player to enjoy your music. Save MP3 file to U Port.Plug in U Port With Remembrance of last Running Status (Frequency, Song's Sequence etc.) Read MP3 songs from the USB flash disk or MP3 player directly or from the SD/MMC card and broadcast through the car FM tuner. Have axis of rotation on the handle ,through which the user can turned the transmitter to proper angle at his/her willing Plug car MP3 player into into cigarette lighter of your car directly Plug USB Drive into car MP3 player Plug in SD Card,enjoy your favourite music Build in FM tansmitter ,with 7-key remote controller Frequency range: Full frequencies (more than 200 frequencies,87.5MHz-108MHz), 0.1MHz gap between channels With Remembrance of last Running Status (Frequency, Song's Sequence etc.) Read MP3 songs from the USB flash disk or MP3 player directly or from the SD/MMC card and broadcast through the car FM tuner. Have axis of rotation on the handle ,through which the user can turned the transmitter to proper angle at his/her willing It also makes for hands-free phone calling. The phone plays over the car stereo and has a good enough microphone to pick up my voice. My phone also acts as an MP3 player and plays books from Audible. Further information. This is working well with a Galaxy 3s phone. Requires a stereo mini > stereo micro adapter for my phone. The USB connection on this should not be used as a charging port. Doing that confuses both devices. package Includes: 1× Car Mp3 Player1× Mini Remote Controller1× Audio Cable