An upgraded version of D20, D20 2.0 is a powerful, high-quality professional diving light designed for underwater lighting. It can reach an underwater depth of 200 meters, allowing you to explore the deep space under the sea with ease. Utilizing a powerful and efficient Luminus SFT40 LED with excellent darkness penetration capabilities, it provides a maximum brightness of 2200 lumens and a light throw of up to 500 meters. Powered by a single 21700 rechargeable lithium-ion battery, it can provide 5.5 hours of ultra-long continuous lighting. With a beam angle of 9 degrees, this light effectively allows you to focus the beam to explore undersea environments such as caves and shipwrecks with ease, and can also illuminate colorful marine life from a long distance. The body is made of high-strength aerospace-grade aluminum, and its surface is treated with diamond-grade anti-corrosion oxidation to form a solid protective layer that can effectively resist seawater corrosion.