Car MP3 Player Phone Transmitter with Bluetooth Function.     Features:  1. New and high quality.  2. Fashionable appearance.  3. Built-in Bluetooth with FM transmitter.  4. Build-in microphone.  5. Can charge you mobile phone.  6. Excellent sound quality with CVC technology for echo cancellation & noise suppression.  7. Support mobile's A2DP Function.   8. Automatically connecting to your mobile.  9. Support TF Card.   10. Support MP3,WMA audio files format.   11. Memory function of song, frequency.  12. Line in function you can transmit music to your car auio, like MP3/CD/DVD.   13. Enjoy music in your vehicle with this Bluetooth car MP3 player FM transmitter.      Specification:  Sensitivity: -42dB +/- 3dB 360round.  Working Current: Max 45mA.  Standby Current: Max 25mA.  Frequency: 2.402-2.480GHZ.  Effection Distance: 5M.  Rf Output: 4dBm.  Input: 12-24V.  Output: 5V+/-0.25.  Output Current: Max 1000mA.  Short Circuit Protection Current: 2.4-3A.  Color: Black.  Weight: 56.00g.     Package Included:  1xTransmitter.  1xUser Manual