DIY Projector Student Handmade Toy Science Experiment Self-made Slide Projector Teaching Aid Model Main Feature:1,The 3D Puzzle Mode, a Mechanical art, cool gift for boyfriend, husband, boys, girls or friends in birthday, Christmas, Thanksgiving Day, Valentine's Day or any special time2, Eco-friendly and well made, without dyestuff and varnish, not treated with any harmful substances. With Cutting technology and Exclusive design3, Brain Teaser Toys. The 3D puzzle kit need your more time think and patience, to put piecing this kit together, requires you to pay attention to little details. Well worth the time and a nice stress reliever4, Easy to DIY assemble,working with your hands and head. Detailed English Instruction, good direction. FINE MONTOR SKILLS and HAND-EYE COOPERATION5,Size16. 69x8. 5x7. 5cm Package includes:1 piece of 3D assembled projector