1RENEWABLE ENJOYMENT - The parts can be easily disassembled after completion of one robot kit. This allows for a steady source of learning and play along the way while making any of the 13 robot options. Whether building robots or robot dogs, this kit provides a good introduction to green technology. 2 POWERED BY THE SUN Harness the free energy provided by the sun to power any of the 13 robot possibilities. There is no need for batteries as alternative energy sources will do the job. 3 GEARED FOR EXCITEMENT The number of gears and moving parts will help in the development of future engineers. They will learn how each piece works with others to form a finished robot with motion capabilities. 4 BUILD A BOT Step by step easy to follow instructions to complete each build included in instruction manual. Suitable for aged 8+ kids. Each robot move in their own unique fashion. Engineered with a gear box for smooth movements, this 13-1piece kit offers hours of fun. 5 EXCEPTIONAL DETAILS All pieces of our toys are made with non-toxic ABS materials, certified by European and American Toy safety standards, ensuring kids play safer and reassure parents. Parts of stem toys are smooth without burr and precise assembly with a high degree of integration. Clever structure design makes multiple parts common and kids will love it and refuse video games.Material: Plastic Color: Multicolor Suitable age: 8 years old and above Package size: about 32 * 7 * 20.2cm . . . , , !