Cassette Tape to MP3 Converter - these tape players are compatible with various tapes. By connecting the cassette player to your computer via a USB cable, you can convert old cassette tape music into MP3 format files. Then you can play these mp3 files on your computer, mobile phone, mp3 player, or burn to CD$ Convert Tape to MP3-it runs on battery or USB power. Additionally, when plugged into a USB power source or your computer, this cassette does not require batteries and is easy to use. You can use power like a battery Box Walkman-The compact size and suitable weight allow you to comfortably enjoy music anywhere through the 3.5mm jack headphones (included). No need to install or driver$ Various Compatibility-Compatible with Windows XP, Vista, and Windows 7, and the Mac version is lower than 10.5. Flexible battery (not included) or USB powered operation$ Audio Cassette Player - The audio cassette player can be powered by 2 AA batteries (not included) 3V DC or USB 5V DC power