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The two-battery Kroma’s primary light source is a 3-watt LED. Press the momentary-on tailcap switch and you get 15 lumens of white light – the output of a typical two D-cell flashlight. Press further and you get a brilliant, tactical-level 60-lumen beam – bright enough to temporarily blind and disorient an attacker by impairing his night-adapted vision. At either output level the Kroma’s primary beam is perfectly focused by a TIR lens – no dark holes, shadows, or hot spots. Runtime for primary light is 10 hours at low output, two hours at high output.
By twisting the selector ring located just below the head, you can choose low-output, wide-angle, night-vision-friendly beams in either red or blue. Regardless of the selector ring position, if you fully depress the tailcap switch you’ll activate the high-output primary white beam.
Why red and blue secondary lights? Police and military users prefer red because it preserves night-vision. Game watchers and hunters appreciate the fact that many animals, such as dear, cannot see colors in the red portion of the visible light spectrum and are therefore not disturbed by the red light. Blue light makes red liquids (such as blood and hydraulic fluid) stand out in the dark, which is useful to pilots and aviation mechanics conducting pre-flight inspections and hunters tracking game in low-light conditions.
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