With the ezcap231 cassette tape to MP3 converter, you can easily play old tapes and convert your old tapes to MP3 without a computer, and it can automatically partition all songs on one side of the tape. You just need to plug in a USB drive and then press the "record" button, the device will convert all music on the tape to your USB drive in MP3 format automatically. You can also play it, or place the USB drive in another location (computer, portable speaker, etc.) to play recorded music. Features Standalone, no computer required. Automatic partition. With playback, you can check the recorded music on the device. With Auto Reverse function. AA battery or USB power. Small size, can be used for playing, converting anywhere. Package Contents Main unit (ezcap231 cassette tape to mp3 converter) USB to 2.5mm cable (for USB power) Hearphone User manual AA batteries (optional) Specification Converter format: MP3 Power supply: 2*AA battery, USB port power (5V for DC adapter, USB from PC) Working time: 1 hour with 2*AA battery Audio channel: Stereo L/R Bit rate: 128 Kbps Dimensions: 121(L)×93(W)×34(H)mm / 155g Weight: 145g (without batteries)