This Miller Engineering Light Works USA Martian Billboard Animated Neon Sign features exciting animated lighting. The working billboard includes assembled electronics plus a AAA battery holder that uses three cells. This large sign is great as a large sign in HO Scale or a smaller sign in O and S Scales. Electroluminescent light sheet is paper-thin and produces no heat. Complete instructions are provided and a sign base is included. Use the Martian Billboard animated sign as a fun addition to your bustling commercial district. Check out the entire line of Miller Engineering animated neon signs.WARNING: This product can expose you to chemicals including Diethylhexl Phthalates, which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov