Note only LED lighting set not included the model The classic style does not include tree house lights and car lights Function The lighting is compatible with Lego 21330 kevin alone at homeColorful light the light set emits beautiful lights in the dark Can add more charm to your model and show your building blocks to your families and friendsCONVENIENT Powered by USB and comes with a battery box The voltage should be less than 5V to avoid burnsInstallation tips please do not pull the parts too much during installation do not bend or shake them to avoid damage