If you have a pocket large enough for a standard deck of cards, all you need is the MZNF520D Net MD Walkman and a few MiniDiscs and you can carry hours of high quality, low cost digital audio and enjoy excellent skip free sound practically anywhere and anytime. You can fit over five hours (up to 320 minutes, LP4 mode) of digital audio on a single MiniDisc and fit several MiniDiscs in the average shirt pocket. Compatibility with MP3, WMA and WAV files gives you the ability to record and enjoy music from the Internet and other sources now using these popular audio formats. There is a tremendous amount of audio entertainment readily available to you once you tap into the power of Sonys MZNF520D. Especially when you add in all the additional audio made possible by the included Digital Tuning Remote Control that gives you access to FM radio and Weather Band stations as well as the ability to listen in on TV signals.