Features: Converts your precious cassette collection to MP3 standalone, no computer required. Plug and play. With Playback, can check the recorded music on device directly. Flexible battery or USB-powered operation. Overview: 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 the music on tape to your USB disc in MP3 format automatically. You can also playback on it, or just put USB to other place (computer, portable speaker,etc.) to play the recorded music. Compact and portable design. Can be used as personal cassette player. : Interface: USB2.0 Standard Recording Format: MP3 Power Supply: 2 x AA Battery, or USB port Power selection Working Time: 1 hour with 2 x AA Battery Audio Channel: Stereo L/R Bit Rate: 128Kbps color: White material: plastic Package Contents: 1 x USB cassette kit 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.