3D FX Marvel Thor Hammer, looks amazing breaking through your wall. Apply crack sticker and then attach the hammer. Looks amazing on or off. Safe – Cordless. Never gets hot, uses LED lights so always stay cool to the touch. Lead free. Easy on/off switch. Looks great on or off. batteries NOT included – need 3 X AA Simple installation. Thor Hammer light mounts to a wall on top of a crack sticker (included), making it appear that the hammer has been thrown into the wall Provides a comforting light for children Easy to install, all components for installation included Official Marvel merchandise, looks awesome on and off All lights are wall mounted on top of the unique crack sticker making it appear the light has broken through the wall.