The OrcaTorch D550 is a waterproof and lightweight dive light, boasting a magnetic tail switch for easy use. With a CREE XM-L2(U4) LED, it delivers up to 1000 lumens of brightness and can run continuously for up to 5 hours and 45 minutes. Its compact design makes it ideal for underwater use. FEATURES: Cree XM-L2(U4) LED, 1000 lumens output Powered by one 18650 battery Magnetic controlled tail switch offers high waterproofness and easy operation underwater Standardly included wrist strap fastens the flashlight to the back of your hand depth rated to 150 meters High efficiency constant current circuit, constant brightness Reverse polarity protection, to protect from improper battery installation Over-discharge protection function Constructed from high-strength A6061-T6 aluminum Mil-Spec Type III hard anodized finish for durability and corrosion resistance Two sides coated toughened glass with high water pressure resistance under deep water Stay dive-ready with a spare compatible 18650 battery and add a wrist strap upgrade for extra comfort and hands-free use underwater!