With this standalone cassette to MP3 converter, you can easily convert your old tape to MP3 without a computer, you just need to plug a USB Flash disk (or USB card reader with S-D card) on then press the "record" button, and the device will convert all of the music on tape to your USB Flash disk in MP3 format automatically. You can also playback on it, or just put USB Flash to other places (computer, portable speaker, or transfer to your mobile phone, for iPod, etc.) to play the recorded music. Features: Easily convert your old tape to MP3 and save it into USB Flash Drive, no computer needed. Record in manual mode or in auto mode. Automatically or manually partition songs of tape. With Playback, you can check the recorded music on the device. Audio output enables you to listen on your headphone, or other speaker systems. Support audio input, you can record music from other sources with a 3.5mm audio cable (not included). Support Auto Reverse function. With function keys, easy to operate. 2 AA battery or USB power supply selections. Small size, play and convert anywhere. Note: If the space between two songs is too short which can not be detected, it will take them as one song, and save the two songs in one file. When you meet this situation, you can use the Audacity software to editing them . Specification: Converter format: MP3 Power supply: 2 * AA Battery, or USB port power supply (5V DC adapter or USB from PC) Working Time: 1 hour with 2 * AA battery Audio Channel: Stereo L/R Bit Rate: 128Kbps Color: Black with Grey Main Item Size: 11.1 * 8.2 * 3.0cm / 4.37 * 3.22 * 1.18in Main Item Weight: 182g / 6.43oz Package Size: 15.3 * 11.0 * 4.0cm / 6.02 * 4.33 * 1.57in Package Weight: 258g / 9.10oz Package List: 1 * Cassette to MP3 Converter 1 * Headphone 1 * USB Cable for Power 1 * User Manual (English)