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°, 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. DETAILS Utilizing Luminus SFT40 9° beam angle, provides an intense focused lighting Professional pressure-resistant and waterproof structure design, diving depth underwater 200 meters SUS316 side switch has better corrosion resistance and is more suitable for deep sea diving environment Ultra-clear tempered glass lens with anti-reflective coating, light transmittance reaches 98.3% Battery indicator light, which shows the remaining battery power Coated with tempered glass on both sides, can withstand deep water and high water pressure The surface forms a diamond-like high-strength protective film to resist seawater corrosion High strength and impact-resistant HAIII hard-anodized anti-abrasive and corrosion-resistant finish All metal body (AL6061-T6 high-quality aluminum alloy) can withstand 1.5-meter drop test IP68 Dust-proof and Waterproof Rating Included: 1 x ACEBEAM 21700 USB-C rechargeable battery SIZE Length: 136mm/ 5.35 inches Head dia.: 34mm/1.33 inches Tube dia.: 27mm/1.06 inches Weight: 128g/ 4.51oz (w/o battery) OUTPUTS 1 x Luminus SST-40 LED 6500K Low: 530 lumens; 14280cd; 239 meters; 5 hours 30 minutesHigh: 2200~1000 lumens; 62500cd; 500 meters; 60 seconds + 2 hour 15 minutesSOS: 1200 lumens; 30800cd; 351 meters; 4 hours 30 minutes Max. output: 2200 lumens Max. beam distance: 500 metersMax. runtime: 5 hours 30 minutes on 530 lumensPeak beam intensity: 62500cd