Get ready to take your place on the TAG Heuer Porsche Formula E team with this LEGO® Technic® Formula E Porsche 99X Electric set. Put your engineering skills to the test building the race-winning car. Then use the pull-back motor and get ready to go, go, go! The LEGO Technic AR app brings the racing to life. Choose your racetrack and master the art of energy management to take the checkered flag. Build a Formula E racing icon – Motorsport fans will love building this LEGO® Technic® Formula E Porsche 99X Electric (42137) set Augmented reality – Download the LEGO® Technic® AR app to scan the model. Then use the pull-back function to launch the car using your foot and see it come to life in exciting races Pull-back function – Using the 2 pull-back motors, kids can judge how much energy to put into the car toy before making the perfect start to the race using the trigger A cool way to play – The pull-back function combines with the LEGO® Technic® AR app. After scanning the car in the app, pull it back by hand then use your foot to launch the car and watch the result Authentic design – This buildable model Porsche is an authentic model replica of the real-life Formula E Porsche race car, complete with sponsor logos Ideal for any Formula E racing fan aged 9+ – This Porsche building set makes a top gift for kids who love Porsche race cars, Formula E or AR toys Perfect size for play – This Porsche pull-back race car toy for kids measures over 2 in. (6 cm) high, 12 in. (31 cm) long and 4.5 in. (12 cm) wide Learn through play – The LEGO® Technic® universe offers advanced building sets for LEGO fans who are ready for their next building challenge High quality standards – LEGO® Technic® components meet rigorous industry standards to ensure they are consistent, compatible and connect reliably every time Tested to the max – LEGO® Technic® components are dropped, heated, crushed, twisted and analyzed to make sure they meet strict global safety standards