Portable wireless speaker Applicable to USB,SD/MMC card,computer,mp3,mp4,mobile,ipod,iphone Built-in lithium battery,recharge Digital MINI card ... small speakers-Stereo sound,ultra-low sound powered from the phone.-Support USB,SD card, ... power adapter USB charging voltage of 5 volts.-Alloy,bass vigorous,high pure,delicate strong fashion.Let all digital fans without ...