Keedox&reg; 2013 Upgraded!! USB Portable Cassette to MP3 Converter Tape-to-MP3 Player with Earphone Converter format: MP3; Power supply: 2*AA Battery, or by 5V DC adapter; Working time: 1 hour with 2*AA battery ; Audio channel: Stereo L/R; Bit Rate: 128Kbps Dimensions: 16*9.4*3.5cm; Weight: 145g (without batteries); Package Contents: Main unit (cassette tape to mp3 converter); 1x USB cable Stand alone, no computer required.Plug & play.With Playback, can check the recorded music on the device.Small size, can play, convert anywhere. With this cassette tape to MP3 converter, you can easily convert your old tape to MP3 without a computer, you just need to plug a USB flash disc on then press record button, the device will convert all of the music on tape to your USB disc in MP3 format automatically. Can also playback on it, or just put USB Flash to other place (computer, portable speaker, or transfer to your mobile phone, iPod, etc.) to play the recorded music. Buy it from our store in Tennessee and get it in 2-5 days.