1. Cassette player with fast forward and rewind fuction 2. USB power supply & battery power supply 3. USB link to PC for recording 4. Rotary volume 5. 3.5mm earphone socket If you own a USB cassette , you can : 1. Rediscover your old cassette tapes on the go 2. Convert your old mix tapes and cassettes to playback on Ipods, MP3 player 3. Portable design fits in virtually any bag and enables you to play and transfer anywhere 4. Plug "n" play USB-powered operation 5. Flexible battery or USB-powered operation 6. Comes with tape converter software to guide you through transfer 7. Audio output enables you to listen on your stereo, headphones, or other speaker systems. 0.5kg/pcs.