12-in-1Solar Robot Kits12 different building robots which can move on land or wate for your child to build, two levels as to complexity which helps children build a solid foundation in Science, challenge their manipulative skills. Parts can be easily disassembled after completion of every robot build. Powered by The Sun/BatteryPowered by the sun,no batteries needed.There is a solar panel included that transforms the solar energy into electric energy, which drives the wheel and makes the robot run.which allows children to understand the environmental concept of green technologies and renewable resources. Clear InstructionsKids could complete the building by following the instruction manual step by step. We recommend parents and kids work together to finish the first robot building which will make a lot of sense. DIY Assembly Creative Ability This stem robot kit for 8-12 year olds comes with all the parts you need to build a real working robot from scratch, from pistons and shafts to gears, tires, and more! Improve your child's imagination and creativity by challenging them to build their own robots with 190 easy-build pieces parts & accessories. Ideal gift All pieces are sturdy and durable, which are made of premium quality harmless and non-toxic ABS plastic. Great gift can be a geat gift for birthday/Christmas/Children's day/summer camp activities, or a good choice for someone who are DIY Lovers.