The techno gears rc sets are the perfect way to encourage youngsters to build. With its 80+ colorful construction pieces, power motor and sounds, and now: remote control forward and reverse motion! Kits include everything your vehicle enthusiast needs to build their own moving and working drag racer. The mechanics of these techno gear sets include gears and will introduce and experience the science of gear ratio. These products align with and support stem (science, technology, engineering and math standards). Requires five “aa” batteries (not included). Ages 6+ years. • 80+ Colorful construction pieces • remote control • power motor • interlocking plates, gears, 3-d connectors. • Durable plastic