* No battery required * Wonderful enlightenment for students' solar energy concept and new energy concept teaching. Please note:1) In order to have the solar & salt water hybrid car running under sunlight outdoor， you need to put it under direct strong sunlight， and put it on a rather smooth surface 2) There is a switch on the back of the car， when you find the car doesn't run， you may turn the switch to another side to have a try. * Tip: not fit for kides below 3 years old Package Include: 1 x Solar & Salt Water Hybrid Car