SKU Fenix FD41 Light Source Cree XP-L HI LED Brightness 900 lumens (Max) Power Supply One rechargeable 18650 Li-ion battery (ARB-L18-2600U included) or two CR123A batteries (not included) Usage Duration Turbo: 900 lumens / 1 hour 40 minutes High: 350 lumens / 3 hour 50 minutes Medium: 150 lumens / 10 hours 15 minutes Low: 10 lumens / 150 hours Waterproof Level IP68 Beam Distance Turbo: 900 lumens / 340m High: 350 lumens / 218m Medium: 150 lumens / 141m Low: 10 lumens / 37m Size 146 x 25.4 x 40 mm Weight 160g (excluding battery) Highlights This zoomable – or focusable – flashlight allows the choice of four brightness levels, strobe mode and variable focus. A unique twist of the head smoothly transitions the beam between a spotlight and floodlight. Once the user has the light in the desired position, the beam will stay put in the focus position, no lockout function required. The FD41 focusable flashlight is designed for tactical and outdoor use as adjustable focus is imperative for different environments and activities Cree XP-L HI LED with a lifespan of 50,000 hours 360° rotary focusing technology 340m max throwing distance Powered by one 18650 rechargeable Li-ion battery (included) or two CR123A Lithium batteries (not included) Strobe Mode Spotlight and Floodlight Adjustment Intelligent Memory Circuit Dual-protection Function: Time control and Heat control Low-voltage Downshift Function Digitally regulated output maintains constant brightness Reverse polarity protection, protects from improper battery insertion Tactical tail switch for momentary on and constant activation Functional side switch for output selection and Strobe Crenellated strike bezel Made of durable aircraft-grade aluminum Premium type HAIII hard-anodized anti-abrasive finish High efficiency lens with total reflective coating IP68 Rated Protection ( Totally protected against dust and foreign objects and submersible to 2 meters) 1 meter impact resistance