From the Baby Gifts Collection Item #35011 Glitterdome can be personalized with your favorite photograph, holds one 2"W x 2"H round picture Base of glitterdome can be written on with chalk (chalk is NOT included) Lights up and changes color from red to green to blue to yellow On/off switch on bottom Requires 3 button cell (AG13) batteries (batteries are included) Dimensions: 4.5"H x 3.5"W x 2.25"D Material(s): plastic