LED (Light Emitting Diode) navigation light. Unique and precise definition of light angles. Rugged and unbreakable: Precision machined anodised aluminium or carbon fibre housing protects the LED's and electronics. Completely waterproof and vibrationproof: 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 during production, concluding with a 24 hour burn-in test. Easy to install, adaptor and screws included (when applicable).