Taking your music collection on the go has never been so easy. The MZ-NH600D uses MiniDisc technology, which allows you to put 45 hours of music onto just one Hi-MD 1GB MiniDisc. This makes your music library incredibly portable, and the MiniDiscs are so small they can easily fit in a shirt pocket. The player also features long battery life, providing 30 hours of continuous playback with just one "AA" battery.The MZ-NH600D Hi-MD Walkman Digital Music Player is also compatible with Standard MiniDisc Media and supports multiple audio formats. Its Easy Jog Dial Navigation lets you scroll through playlists and songs with incredible ease. minimize