Multifunctional Metal WithUSB Portable Mini Speaker,USB Mini Speaker,Mini Subwoofer Speaker Power input: DC 5V /1000MA Net:15g Multifunctional WithUSB Portable Mini Speaker,USB Mini Speaker,Mini Subwoofer Speaker 1Connect playing with your mobile, MP3 / MP4 laptops etc digital products, support SD, music files automatic playback, built-in FM radio module, can store 30 channels external ...