The clock's face splits and rotates while music plays to 1 of 30 melodies every hour, on the hour. 13 Swarovski crystals add a bit of being. The sensor on the clock disables lights and music when it's dark. Volume control lets you select the right sound level. Plays classic songs, glass bell tracks, and holiday favorites. NOT AN ALARM CLOCK!! Analog display type. Glass material. Excellent condition