Sidewinder Twenty flashlights in one! Each LED features 4 levels of output intensities: Low, Medium, Medium-High, High, plus a Strobe function. One switch for On-Off, dimming and mode selection functions. . Pull-to-turn locking rotary color-selector knob with tactile indicator for easy operation with gloves . Double click button to initiate strobe function from “Off” position . Push and hold button for light output levels from “Off” position . Powered by 2 “AA” batteries. See run time chart below.. Also accepts 2 “AA” lithium batteries, which allow extended operation, or extreme temperatures (-40°F - 150°F) . High-impact, super-tough nylon case; drop-test verified from 30 feet . Battery polarity indicators for easy replacement in the dark . Unbreakable, gasket-sealed polycarbonate lens with scratch- coating . O-ring sealed for waterproof operation. Meets MIL-STD-810F, Method 512.4 . Tethered tailcap to prevent loss . Cord attachment hole supports up to 25 lbs . Articulating 185° rotating head 14000