Complete 37-piece toy train set crafted with durable beech wood and impact-resistant plastic.Compatible with all BRIO World products or use as a stand alone set. Control the engine with the "movement" action tunnels. Record your own sounds and play them using the "play sound" action tunnel. Fix the broken-down train with the repair station and "repair" action tunnel. Add new sounds using the free Smart Tech Sound app. SmartTech is the next generation of railway play, brought to life through added technology. It offers children a new way to play with the BRIO World, creating exciting and unexpected play scenarios that deliver on the traditional values of railway play.