Package Content: 1X DIY Salt Car ToyPowered by salt water and fueled by creativitySalt water fuel cell car gives children a chance to learn about new forms of clean energyThe magnesium metal sheet (3 sheets included) can operate the car for about 5-7 hours continuously; No batteries required just add salt waterFunny toy car salt water fuel cell car vehicle for your kidsEco-friendly and energy saving.After activating the fuel cell module with a saltwater mixture.Only two drops of salt water can make it run 200 meters.Easy to take out the FC module when not in use.Detailed assembly and operation guide.Size:about 58mmX36mmX72mmNote:This product contains small parts not suitable for children under 3 years.