Create an egg-cellent dino world with the Switch and Go® Hatch and Roaaar Egg T-Rex Racer™! Open the egg and find all the pieces you need to build this 2-in-1 dinosaur race car. Zoom the awesome race car around with pumped-up engine sounds and the voice of the race car driver. Then easily transform it into a terrifying T-Rex! Add thundering T-Rex roars with the push of a button to rev up imaginative play. Create a Switch and Go® world, then race or challenge other Hatch and Roaaar Egg creatures (sold separately). Intended for ages 4+ years. Requires 1 AAA battery. Battery included for demo purposes only. New battery recommended for regular use. May require adult assembly.