The world’s smallest, brightest, one-ounce, machined aluminum, one LED flashlight! The Key-Mate® runs longer and stays brighter. * Reflector optics deliver up to 400% more lighting range than traditional penlights * Easily attaches/detaches to just about anything with convenient pocket clip or key ring * Up to 96 hrs. run time * Includes neck lanyard * O-ring sealed for water-resistance * Powered by 4 alkaline button cells (included) * 100,000 hr. lifetime high-intensity LED with reflector optics * LED available in white (10 lumens) or green (2.6 lumens) * 2.36" * .9 oz. * Available in black or titanium with white or green LEDs and Realtree® Camo with green LED