It Is A Car Mp3 Decoder Board.It Supports Bluetooth Function,dual Decoding of MP3,WMA,WAV Format Music,reading USB Disk,card ReadingIt Supports Bluetooth Function.It Has A Digital Tube Display. It Supports Music in MP3/WMA/WAV Format.It Supports Cards Such as MMC,TE/NMA,and USB Interface (U Disk).It Supports External Audio Input LINE IN (AUX).It Supports Remote Control Operation At A Distance of 5-10 Meters.It Supports Power-off Memory Function.Audio output support: stereo (R / L)Weight: 110gPanel interface: USB, SDOutput amplitude: 600mVRated input: 5V / 2ARated power consumption: USB Playback current "350mA" and other states "300mA"Service temperature: - 20C - 60 Celsiuscolour:BlackMaterial:ABSsize:155 x 106 x 25mmPackage Contents:1 x Decoder board1 x remote control1 x cableOnly the above package content, other products are not included.Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.