Ultra durable, power saving LED navigation lamps for enhanced safety. Lamps are proven worldwide on commercial, military and recreational vessels. Features: 1. Ultra low current draw, lamps consume less than 3.2 watts 2. No bulbs, No maintenance, Ultra long service life 3. has no filaments to break making 4. extremely shock and vibration proof for proven reliability and safety in demanding conditions. MultivoltTM 9-33V DC: Advanced electronics ensure reliable illumination and lamp protection even under severe voltage fluctuations and low battery voltages. Voltage protection: Spike protected to +500 volts. Reverse polarity protected to -700 volts. Fully sealed for life. IP 67 certified. High impact housings ensure durability from waves and impact. Ultra heavy duty BSH versions use high-tech Grilamid lens to offer superior strength in extreme conditions. Pre-wired with 2.5m of twin core marine cable: high quality cable assemblies for time saving, completely sealed installations. Minimum visible distance: 2 Nautical miles.