Bi-Color 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.Specifications:. Material Description: UV and impact resistant plastic housing and lens. Minimum Visible Distance: 2 Nautical Mile. Bulb: 12V / 25W BAY15d included. Installation: Vertical surface mount. Cable Entry: Through base plate with rubber grommet. Degree of Protection: IP 55. Approvals: IMO Col Reg 72, USCG, ABYC A-16, Maritime NZ