... pocket-sized compact, easy to carry(2).Built-in MP3 decoder board, FM radio, LED display, and Class D ... battery(3).SD / MMC card, U disk and MP3 format audio files can be played full-function remote control ... display, so you want it(5).Directly with cell phones, MP3, MP4, DVD, CD, the PC, TV, etc any ... the trust of our customers Portable Speaker Mini Speaker MP3 Player USB Disk Micro SD TF Card FM Radio ...