Magical power toy car saline， using saline as power and energy， does not require any batteries， you can just add some salt to make it run， completely environmentally friendly toys. Note: 1， how to make salt solution: add salt， water in a (salt) to 5 (water). Any proportion of salt from 20% to 99% of water is possible， but 20% is the most effective. 2， after a period of use the brine， the car will slow and then stop growing. Then add the salt water can start the car again. 3， each piece is a consumable anode metal may be oxidized， if the erosion can not use， you can replace it with a new sheet metal anode (product suite contains three anode metal sheet). 4. If the brine does not need to drive the car for a long time， do not use it， needs to be cleaned FC module: Rinse the cathode plate， remove the anode plate residual salt， drying all the parts separately， otherwise it will shorten the life of the anode metal pieces. Material: ABS + Electronic ComponentsBlueWeight: 72gPackaging: Box