Welcome to our store， if you have any problems， just contact with us， everything we can solve together. Thanks for your support， have a nice day!6-In-1 Educational Solar Kit is an excellent beginner building kit designed to teach how solar power is used to drive a small motor.Why not create your very own solar gadget with this DIY Solar Robot. Supplied with 21 different components including a solar panel， you can create your very own solar powered car， robot， fan or boat. Ideal for kits and adults.The dimention of product after finishSteamboat: 121mm x 61mm x 86mmWindmill: 154mm x 153mm x 239mmDog: 68mm x 46mm x 64mmCar: 70mm x 54mm x 34mmAircraft: 154mm x 61mm x 94mmHelicopter: 218mm x 61mm x 166mmremark:6 in 1 solar toys Characteristics: independent assembling， educational toys， let the child's beginning ability is stronger， understand the principle of solar energy.