High impact super-tough nylon case offers exceptional durability and weather resistance; Unbreakable polycarbonate lens with scratch-resistant coating; Military model includes white, red, blue and IR LEDs; Pull-to-turn locking rotary knob prevents accidental mode changes; Push-button switch enables/disables selected lighting source starting at low intensity and progressing to the brightest intensity in 4 discreet steps; Double-click of button initiates high intensity strobe of selected light source; Cord attachment holes provided in battery compartment cover capable of supporting 25 lbs of load; Tethered battery compartment cap facilitates battery replacement in the dark without losing cap; IPX7; waterproof to 1 meter for 30 minutes; Meets MIL-STD-801F Method 512.4