Industry Leading Optical Design:Advanced COB light design has stable electrical property, quickly cooling function, brightness and lower energy consumption.,Highly visibility: All-around 3NM reliable 5000K white illumination ensures boat is highly visible on dark night to avoid marine accident.,Harsh IP67 Waterproof Design: Build-in silicone sealed waterproof ring insulates damage from moisture and extend working time of light bulb.,Marine Grade Material: Anti UV PE66 base and high corrosion prevention stainless steel tube can extend boat stern light service lifetime.,Fold-Down Design: 180° adjustable mounted base can satisfy any usage scenario.