... battery inside 3.MP3/USB/SD/MMC input, reverb 4.Radio,song switch 5.MOQ:100pcs AXUE YB-9468This mini speaker ... is widely used at home, office , school , church , factory , hospital ,meeting , restaurant , army etc .Basic function: your voice could ... the button as you like.4.FM Radio: if you want to listen to radio , just plug in the cable (have the ...