Two sidelights with 1 nautical mile of visibility intended for vertical cabin sides. Chrome-platedzinc-alloy with red and green lenses provides a sleek look for your boat. For sail or power boats less than 12m or 39 4” shine lights from dead ahead to 112.5. Key Features 12 volt bulb included Mounting Hardware #4 FHMS, #8 FHMS sold separately