This ATAR Car MP3 Player supports USB driver and SD card and can automatically play and transmit the MP3 files of USB driver or SD card, or after matched with your radio by the frequency.
Trouble shooting:
1. No sound-- Check the FM transmitter, see whether it is power on and well contact with the cigarette power socket or not/ Check whether the fuse tube is OK in your FM transmitter/ Unplug and plug again to restart the FM transmitter
2. Music has noise--Check whether the car FM stereo system's frequency matches with the FM transmitter or not/ Check your FM frequency channel is a clear channel without the interference of your local FM station/ Check whether the audio files are good quality compressed MP3 files or not/ Check whether the car is passing the strong frequency interference area, such as train station, or mobile transmission station or not.
3. Remote Control does not work-- -- 1st time to use, you need to pull out the battery protection film out the remote control -- Check and replace the remote control battery -- Point the remote control closely to the device and try again.
Specifications:
FM transmitting range: 87.5~108.0MHZ
The sound channel separation: 40dB
Frequency response: 35Hz-20 KHz
Installation options: Plug & drive: Easy plug-in into cigarette lighter
Support: D/MMC, USB
Audio Input the interface: 2.5mm stereo jack
Working voltage: DC 12V~24V
Working temperature: -15°C-50°C
Package includes:
-- 1 x Car Mp3 Player -- 1 x Remote Control Unit -- 1 x Audio Cable--1 x Diodes for replacement

• Excellent sound quality: DSP (Digital Signal Process) technology application for echo cancellation and noise suppression
• Support SD/MMC/USB for playing music: LCD display shows playing time, artist name, song name, reads and plays the MP3/WMA format from the SD/MMC card and USB flash disk
• Restore the last frequency, track number and volume when you restart the device
• Frequency Range: 206 preset channels for transmitting: 87.5 MHz. ~108.0MHz
• Multiple Built-in EQ Mode: Rock, Classical, Normal, POP, Jazz and Country; Various Circulation Mode options: All , Single, Folder, Random, Normal

Excellent sound quality: DSP (Digital Signal Process) technology application for echo cancellation and noise suppressionATTOP3