NO MODEL BUILDING SET ONLY THE LIGHT KIT FOR SALE, MODEL NOT INCLUDED. This LIGHTING KIT is specially compatible with LEGO Super Santa's Post Office 10339. MODEL SET MUST BE PURCHASED SEPARATELY OR ALREADY OWNED BY YOU. (Note: Please click on the 4Port Expansion Board to order it together.) LIGHT UP YOUR BLOCKS Illuminate corners of the model with bright, intense lights, enhancing the vivid details inside and outside. Lights compatible with LEGO Santa's Post Office 10339 make blocks glow in the dark. A perfect addition for fan collections and family displays. STEP-BY-STEP INSTALLATION Includes detailed video and PDF installation instructions (available online) and numbered light bags for easy setup. Simply disassemble a few bricks to install the light fixtures. Components are small and non-fragile. DO NOT pull wires excessively. MULTIPLE PLAY OPTIONS Light kit compatible with LEGO Santa's Post Office 10339 can be powered via USB (voltage under 5V). Lights shine brighter when connected to USB power. Test each light component before final assembly.