On the hour the dial opens to reveal a revolving decorative wheel and colorful sparkling lights (LED) and plays one of seven Hi-Fi melodies: Yesterday; Miagetegoran Yoruno Hoshiwo; Hey Jude; The Long and Winding Road; Let It Be; Kawano Nagarenoyouni; Imagine. Gold-tone and metallic brown case this clock has a light sensor volume control glass crystal demonstration button and On/Off switch. Requires 4 D batteries and 1 AA battery (included).Learn more about Wall ClocksClick Here to See the Video of This Clock: *Please be advised that the loading of this video may take a moment.