1. DIY and Create Your Own Robot - Kids STEM toys-robots provide with step by step instruction book, stickers and all the pieces that make the robot. Its include guide for 13 robot designs in details from level 1 to level 2, easy to build as guide step by step. It's fit for aged 10-18 years boys and girls, great robot toys encourage child to learn through play. 2. Clear Instructions Make it Simpler - Don't worry that the assembly of the robot is too difficult for your child. It looks a little challenging to assemble it, but when you read the clear instructions, you will find it easy to follow it. We recommend that parents and children create the first solar robot together, which will make a lot of sense. 3. Educational Gift - By assembling and building different solar robots from simple level to complex, this STEM toy not only develops the mechanical skills of your little engineers but inspires their imagination and creativity. It is a great educational gift for children. 4. No Batteries Needed : Solar powered by the sun and no batteries required.The robot kit includes a solar power panel that collects solar heat energy into an electric energy drive motor, which drives the gears to make the machine run smoothly. Kids don't need to choose the weather, choose the location, indoor and outdoor, rainy or cloudy to play.