Features:.Salt water fuel cell car gives children a chance to learn about new forms of clean energy while building and powering their very own toy..The smallest， least expensive and first fuel cell car to be powered by saltwater.No batteries required just add salt water， Eco-friendly and energy saving..Only two drops of salt water can make it run 200 meters..If you want to park the vehicle simply take out the fuel cell module and rinse with tap water and dry..Detailed assembly and operation guideSize:7.5X4cmMaterial: ABS + Electronic Components; Color:Blue + WhitePackage Content:.1 x Salt Water Fuel Car Toy