Features 1,The sliding robot mimics the walking of a robot, uses gears to provide power, and then uses a worm to reduce the transmission mechanism. The feet alternately go forward, and the transmission is stable. 2,Lifelike and cute shape, ingenious structure and full of interesting 3,Medium assemble difficulty, have certain challenges, and have a good puzzle effect for children 4,Can improve children's ability in all aspects by exercising their DIY skills 5,Not only small toys, the fun function can make children happy Specification Item Type: Assembled Educational Model Toy Material: ABS plastic Power: 2 x AA(not included) Science and Education Toy Type: Physics Capacity Building: Hands-On Ability, Brain Applicable Age: Adolescence(7-14 years old) Package List 1 x Stand 2 x Main Tooth 2 x Crown Tooth 1 x Motor 4 x Porous Square Column 4 x Short Square Post 2 x Short Shaft 4 x Crank 1 x Battery Box 1 x Switch 2 x Long Shaft 2 x Building Blocks 5 x Angle Iron 1 x Cross-Plate 1 x Baseplate 1 x Screwdriver 1 x Part Package Note: 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.