Specification :

Voltage: 12V DC

Operating current: <100mA

FM frequency: Preset all channels(87.00-108.50 MHZ)

Channel switch: Press the A- &B+  key to switch preset channel

Play MP3:Read MP3 files from the USB driver and SD Card through the car FM tuner.Provide five keys: PLAY/PAUSE/SHFL, PREV/V-, NEXT/V+ and A- ,B+.

Audio source: USB flash disk、MP3 player or  SD card

Transmitting distance: up to 30 meters

Can supply power for the other MP3