Cassette tape to MP3 converter-these tape players are compatible with various tapes. By connecting the cassette player to the computer via a USB cable, you can convert old cassette tape music into MP3 format files. Then you can play these mp3 files on computer, mobile phone, mp3 player or burn to CDConvert the tape to MP3-it runs on battery or USB power. In addition, when it is connected to a USB power supply or to your computer, this cassette does not require batteries and is easy to use. You can use the power bank as a batteryBox Walkman-The compact size and suitable weight allow you to conveniently enjoy music anywhere through the 3.5 mm jack earphones (included). No need to install or driverVarious 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 operationAudio cassette player-The audio cassette player can be powered by 2 AA batteries (not included) 3V DC or USB 5V DC power supply