Sony MZ-NH900 Hi-MD MiniDisc Walkman Store up to 45 hours of music on a Hi-MD MiniDisc Includes backlit LCD tuner/remote with editing functions Skip-Free G-Protection technology Easy jog dial navigation &lt;b&gt;NOTE:&lt;/b&gt; The MZNH900's recording features and bundled software are not compatible with the Mac OS operating system.