Portable Amp 1.Built-in DVD and cassette player,USB,SD jack 2 ... 18V rechargeable battery Portable ampBuilt -in DVDplayer, can play DVD ,DVCD,SVCD,VCD,CD,MP3,MP4discUSB,SD connector, Description ... to supply 160 watts' amplifier.4. Functional anti-shack DVD player can avoid 180 degree swing & falter, which ... surface SMT circuit9.Built-in DVD player ,FM radio receiver,can play DVD,VCD,CD,MP3,MP4 disc10.USB ...