A one-of-a-kind, officially licensed, light-up miniature replica of Batman's Bat-Signal.Deluxe Collectible: A finally detailed 2-3/4 inch high Bat-Signal Light-up Function: Projects the iconic Batman symbol onto nearby walls and other surfaces Book Included: A 48-page book of explores Batman's history Art Straight from the Comic Pages: Full-color classic comic art throughout the book book Officially Licensed: An authentic Batman collectible Requires one 3-volt CR1632 button cell battery (included).