Innovative Lighting's Docking/Hull/Back-Up Lights operate 12V DC systems and feature a 50 watt halogen lamp. Each light draws 4 amps. Features a sealed built-in rear heat sink, thermal insulated wires, Pyrex optical lens, spring-loaded lamp assembly and a removable lens cover. Water tight gaskets are also included. Patent #D472,654. Overall Dimensions: 7.60" L x 4.15" W.