Converts your precious cassette collection to MP3 standalone, no computer required. Converts full tape music to MP3 files by automatic partition each songs. Plug and play. With Playback, can check the recorded music on device directly. Flexible battery or USB-powered operation. Compact and portable design. Can be used as personal cassette player. With Auto-Reverse function. Interface: USB Standard Recording Format: MP3 Power Supply: 2 * AA Battery(not included), or USB port Power selection Working Time: 2 hour with 2 * AA Battery Audio Channel: Stereo L/R Bit Rate: 128Kbps Dimension: 11.3 x 8.2 x 3.2cm Color: Black Material: ABS Package Contents: 1 * Cassette Player Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.