Seiko Melodies in Motion Clock Plays 24 Hi-Fi Melodies Plays one of 24 Hi-Fi Melodies every hour, on the hour As the music plays the elegance of the 22 Swarovski crystals sparkle while the dial opens and starts to move and revolve around the face of the clock Three sets of melodies are available on the control panel: 6 Popular, 12 Classic, 6 Christmas (for complete song list, read paragraph below) Light sensor disengages all music and lights automatically when it becomes dark Volume Control, Demonstration Button, On/Off Switch, Four "C" batteries included!