DREAM BIG & BUILD BIG - (Battery NOT included) No limitations, scalable to build as big as desired by adding more pieces to create the master piece. PicassoTiles in colossal styles. LED features three modes: single breathing alternating light, group light, single solid light. 2 x CR2032 battery is required. The LED can be assembled either as a stand alone magnet tile set that can go on the fridge or in conjunction with other PicassoTiles magnetic building blocks as integrated add-on pieces.