The high powered, high speed Hyperactive uses 2.4 Ghz communication for ultimate range and reception. Race a virtually unlimited number of friends without ever worrying about interference. With its self-righting roll bar, this Hyperactive always returns to its upright position giving you maximum racing time. Usable indoors and out, switch between your selection of foam and rubber tires for maximum environment performance. Accelerate to explosive speeds up to 20MPH as you defy gravity and witness the explosive performance of HyperActives. Includes 1 Hyperactive Pro, 1 controller/charger, 8 interchangeable tires and 1 instruction sheet.