Just picked up 2. I chose the Monster Truck. It comes with three gear options..8t,10t,& 12 turn. It comes with a 30,000 rpm motor. The controler takes 8 double A's and the car/truck takes 4. Diffenately need to go with hop ups for looks. I will be putting in batteries tomorrow do not have any??? For the price it is one of the best values in 1/24 scale. The servo is most interesting with a clear housing. You can see all the gears and watch them move..