Containing in the box to start racing including 4 cars, 2 hand controllers, and track layout. Our race track set has two power modes, electric or 6xAA battery(not included), so your kids can experience the fun of racing at home or outdoor playing. Exciting high-speed racing car can reach a speed of about 300-370 mph on the electric race track, and you can fully feel the power and speed of the racing car .Quickly set up the track and start racing right away. With1:64 Scale realistic racing track is an exciting two-player and group activity that friends and family can enjoy racing head-to-head together. Easy for installation, the slot car track is 32ft long, which is longer and bigger, and has a better system to lock into place and easy to assemble. Perfect gift for kids , high quality and durable. No harmful to kids. It is a good choice toy gifts for kids on Easter, Christmas, Halloween, Thanksgiving Day, New Year.