It's the world's first battery-free wooden assembled 3D model projector. This is a perfectly designed 3D modeling kit that requires your hands-on work to complete. But it's more than just a model - it's a fully functional movie projector. In a dark room, point the Vitascope to a white screen about 11inches away, turn the handle and watch the film reel! Rotate the crank, listen to the motor sound, and see how the motor and hand generator work. It takes 4-6 hours of continuous work to put all 183 laser-cut wood pcs together. This is a perfect opportunity to interact with your family, friends, and your partner. You're sure to feel a strong sense of accomplishment after you finish your work.