【Slot Car Race Track Sets】Everything you need contained in the box to start racing including 4 cars, 2 speed controllers, and track layout. With no wires in the way your little one can play anywhere, without a nearby outlet. 8 AA batteries are required (batteries not included). Quickly set up the track and start racing right away! | 【14.5FT Dual Track】New design track is very sturdy, having a better system to lock into place from some old ones. Set up takes about half an hour. Please make sure that the track pieces are completely snapped together. There will be more track extension sets soon to customize and expand more layout options. | 【Fast-Paced Car Racing】Feel the power and speed of the 1:43 scale size cars racing on the track measuring over 14 feet and reaching scale speeds of 300 mph! 2 DTM cars and 2 Formula cars have built-in LEDs that glow at high speed, bring you the coolest racing experience ever. The connection pads on the underside of the cars may shift a little during use. Flip the car over and straighten out the contacts so they will be good to go. Cars must be correctly positioned. | 【Easier to Keep on Track】Slot cars take skill to keep on track. You must throttle the controller just like a normal car going around corners. We have adjusted the cars to reduce the difficulty for children. Strengthened magnatraction and super tough cars make it easier to keep on track and suitable for kids. | 【Exciting Toy Set for All Ages 】Two-player racing that family and friends both young and old will enjoy! Great gift for kids and adults. Perfect for both beginning and advanced racing fans. Variable speed remote control cars allow racers to control course difficulty, drive at a fast speed but not fall off the track!