mp3 board , mp3 player, usb mp3 player Product DescriptionDetailed Product DescriptionSupport USB/TF/SD/MMC card, MP3, FM radio, remote control, FAT ... ; five kinds of EQ mode: POP, ROCK, JAZZ, CLASSIC, BASS, USB and SD can be exchanged anytime, bi-color LED showing ... :45dBdistortion:0.1%output:550MVS/N:65dB 3. Accessories: remote USB /TF/SD CARD MP3 BOARD WITH FM