1.multimedia speaker 2.2.0 channel ,USB/SD/FM function 3.remote control . 4.OEM/ODM wooden box speaker Feature:1)Portable USB/SD Card Speakers2)Play MP3 format music from MMC/SD card, U disk.Connect 3.5mm stereo audio cable to speaker socket"LINE IN",can enjoy the music from mobile phone,MP3,MP4,PC,IPOD and other audio devices 3)With FM Radio