Wireless speaker PK-15M 1.MP3,USB,SD jack 2.Built-in recharge battery 3.High sensitive wireless microphone Portable speaker PK-15MBuilt-in DVD player,can play DVD ,DVCD,SVCD,VCD,CD,MP3,MP4discUSB connector Description : It was designed with versatility in mind:Multi-media supported ,compact ,portable ,clear and loud sound reproduction ,well suited for any PA application,in cluding home Karaoke , ...