5 years & up. The 3-in-1 PowerClix® Bluetooth® Racers Design Set features 41 unique magnetic snap-on pieces to build a vibrantly-colored performance race car. Customize your race car with decals, a spoiler, bumper, fenders, motors, dual exhaust, side scoops, or a roll bar. The sturdy wheels and axels and streamlined parts make it easy to build and alter each vehicle. Connect to the powerclix app via Bluetooth® on a mobile device. App is available on the App Store and Google Play. Set includes 55 pieces.