Twice the output of the SeaBlaze3 and completely surface mountable. The housing is bronze alloy with an underwater service life of more than 50 years. The circuitry is completely self-contained and tested to rigorous military standards for EMI, transient voltages, temperature extremes, and mechanical shock and vibration. Can operate above water indefinitely without damage and has a lower profile and smaller footprint than most other competitor LED underwater lights. No external circuitry and unlike other transom lights no large through-holes required.