iUni HJ811! Experience speeds of 10 to 25 km/h. Equipped with a range of 100 meters, this product features LED lights for better visibility. It operates on a frequency of 2.4 GHz for reliable control. Achieve speed up to 25 km/h with ease! Ideal for outdoor fun. The demo function allows easy testing. The product is powered by a Li-ion 7.4V 700mAh battery, which can be charged via USB. Dimensions: 30*8*6.4 cm. Requires 4 AA batteries (not included). Ideal for ages 14 and up!