OrcaTorch D520 is a palm-sized diving light with a mechanically rotary switch. The rotary switch offers high reliability underwater. Using the USA CREE XM-L2(U4) neutral white LED, its max output can reach 1000 lumens, meanwhile the 5000K LED color temperature provides superb color rendition. Powered by one 18650 battery, its max runtime can reach 2 hours. Cree XM-L2(U4) LED, max 1000 lumens output Uses 1*18650/2*CR123A/2*16340 battery Mechanically head rotary switch offers high reliability underwater Water pressure resistant construction ,depth rated to 150 meters Reverse polarity protection, to protect from improper battery installation Over-discharge protection function Aircraft-grade high strength aluminum material The latest diamond grade hard-anodized seawater-corrosion-resistance finish Alloy aluminum reflector with professional optical analysis Length: 134.5 mm Weight: 113.5 g Max output: 1000 lumens