Discover a top gift for Formula E racing and Porsche fans aged 9+ with this fast-paced Lego Technic Formula E Porsche 99X Electric (42137) pull-back race car toy. Kids enjoy an immersive build, crafting all the details of the Porsche race car, then recreate all the action of a real race day using the 2 pull-back motors and Lego Technic AR app.Using augmented reality, the app lets kids immerse themselves in the role of a top Porsche Formula E driver. They’ll choose which circuit to race on, make decisions about energy management and use their skills to work their way up in the race. Using the 2 pull-back motors, kids will decide how much to charge the car’s energy before pushing the trigger to see the car race along the AR track right in front of them!Lego Technic building sets feature realistic movement and mechanisms that introduce Lego builders to the universe of engineering in an approachable and realistic way.Product Dimensions: 31x12x6cm Contains: Lego Technic Formula E Porsche 99X Electric 42137 (422 pieces)Age: 9 Years+Batteries: Not required