NaviLED lamps use less than 10 percent of the power required to run a bulb navigation lamp of the same visible distance. Port and Starboard lamps consume less than 2 Watts combined. Ultra long service life. HELLA Marine LED technology has no filaments to break making NaviLED lamps extremely shock and vibration proof for reliability and safety in demanding conditions. Advanced electronics ensure reliable illumination and lamp protection even under severe voltage fluctuations and low battery voltages.