Kyosho's Mini-Z sets come complete with chassis, body, and controller, as well as FET electronic speed control with reverse function (and brake); swing-type T-bar rear suspension system; high resolution steering servo; four pinion gears; high-grip rubber slick tires; and a 130-class motor. Requires four AAA batteries and eight AA batteries (not included) for about an hour of non-stop racing! This car features an upgraded FET that provides "approximately 30 percent more capacity than conventional units"...that means it goes faster!