Description: This product can be regarded as an optical instrument that can enlarge a picture and image it on the screen. With the function of experimental and scientific, your kids can get a better knowledge about light and physic. It is made of wood material. The length of the product is 10cm, the width is 12cm, the height is 8cm. It is suitable for education and early learning. Item Name: DIY Assembly Projector Material:Wood,Cardboard Batteries: 2 x AA Batteries(Not included) Size:10cmx12cmx8cm/3.94inx4.72inx3.15in Notes: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Package Includes: 1 Set of DIY Assembly Projector