Stern Navigation Light - Incandescent - 2nm - Black Housing - 12VInternationally approved navigation lamps. Non-magnetic and saltwater resistant. Housing snaps to base without screws.2984 series navigation lamps feature a vertically hanging bulb and contacts in the upper area of each lamp to prevent corrosion.SpecificationsMaterial Description UV and impact resistant plastic housing and lensMinimum Visible Distance 2 Nautical MileBulb 12V 25W BAY15d includedInstallation Vertical surface mountCa