GS-S09150-1/3X circular underwater lamp is structured by entire Aluminum alloy. The big heat-sinking area can efficiently and rapidly spread out the heat generated by the LED lamp and ensures the lifespan of the LED lamp. The lamp holder can turn around 180 degree due to its reasonable installation design. The special crafts used to handle the body of the lamp make it beautiful, anti-corrosive and anti-tarnish.