Award Winning and Patented Auto Expanding Wheels allow you to climb over any obstacle. Dual Motor 4 wheel drive gives you the power and grip to defeat any terrain. Powerful built in 9.6v LiFePo4 USB rechargeable battery. Nikko remote control is engineered with 2.4Ghz transmission technology allowing interference free fun and a maximum of 10 players racing at once. Nikko quality and innovation with the latest technologies, extensive durability testing, and efficient designs.