This limited edition set conveniently includes everything you need to have your own Mini 4WDraces at home. Set includes the Oval Home Circuit, which features a finished size of 216cm x120cm and an electronic lap timer, and two finished Mini 4WD Pro cars, the Nitro Thunder(Black) and Manta Ray Mk.II. Alkaline batteries for lap timer and Mini 4WD Pro cars are sold separately.