Masthead Light - 3nm - Silver Housing - Horizontal MountFeatures:. LED (Light Emitting Diode) navigation light. Unique and precise definition of light angles. Rugged and unbreakable: Precision machined anodised aluminium housing protects the LED's and electronics. Completely waterproof and vibration proof: Interior is fully filled and sealed with special potting resin. Waterproof to IP 68+ (submersible). Lifetime over 50,000 hours or 4,200 nights. Low power consumption - 70 to 90% less than traditional navigation lights. Full brightness with input voltages ranging from 10 to 32 Volts. All Lopolights have been tested several times during production, a total of more than 24 hours. Easy to install, adaptor and screws included (when applicable). Silver Housing. Horizontal Mount