3-meter multiple orientation impact resistance tested; IP67 Rated; dust-tight and waterproof to 1 meter for 30 minutes; O-Ring and gasket sealed openings; Meets MIL-STD-810H, Method 512.6 Immersion; Rotary selector knob prevents accidental mode changes; IFF strobe is activated by a three-position ambidextrous switch; On/Off switch enables/disables selected illumination source starting at low output and progressing to the brightest output in 3 discrete steps (Double click of push button initiates high output strobe of selected illumination source); Built in battery polarity protection guards against damage to the light