Battery purchase link - About this item - 【Extreme Tire-Scorching Action】 - With powerful built-in motors, our rc trucks 4x4 offroad waterproof come fully assembled, ready to run straight out of the box. It reaches speeds of up to 31 mph (50km/h), which makes the car race faster than others 【Simulation Structure Design】 - The use of simulation structure design, with the real car control feeling, to achieve full-scale stepless speed, high-speed driving, rapid acceleration, deceleration, braking,