This cassette player music converter allows you to easily convert your old tapes to MP3 format without a computer. Simply plug in a USB flash disk, press the record button, and the device will automatically convert your music to MP3. You can also playback your music on the device or transfer it to your computer, portable speaker, or mobile phone. The device comes with a speaker, USB cable, earphone, and user manual. It can be powered via USB or 2 AA batteries.