... manufacturer of all kinds of walkman,tape player to MP3 & CD, portable music box, cassette player, usb cassette tapes,cassette to MP3 ... you to listen on our stereo, headphones, or other speaker system. System Requirements:• One available USB2.0 port,pentium4 ... you to listen on your stereo, headphones, or other speaker systems Packaging:Unit size: 115x90x31mmCarton size:48x26.5x27cmNumber:40pcs/ ...