Moon In My Room Light-up Moon: Built-in light sensor illuminates moon when room gets dark Automatic or manual function shows 12 phases of the moon 15 minute audio CD provides a guided tour to the moon What is different about the moon tonight? It is inside your room! Authentically detailed, Moon In My Room hangs on your wall and shines moonlight just like the real moon. Twelve different phase settings let you match what the real moon looks like outside tonight! Listen to the included audio CD to learn exciting facts about the moon and its unique relationship with planet Earth. The 3-D moon measures 10-inches in diameter with a width of 2-inches. Batteries not included: Moon In My Room requires 3 "AA" batteries. Remote control requires 2 "AAA" batteries.