Streamlight Key - Mate: The world"s smallest, brightest keychain light! Small size, big power! The Streamlight Key-mate is so bright you"ll swear you"re carrying a full-size flashlight on your key chain! That"s because the advanced reflector optics and single powerful LED deliver up to 400% more lighting range than traditional penlights. Easily attaches to just about anything with convenient pocket clip or key ring. 100,000 hr. lifetime high-intensity LED bulbs, your choice of colors. White is a bright 10 lumens, Green a more subdued 2.6; Up to 96 hrs. run time from 4 alkaline button cells (included); Includes neck lanyard; Machined aluminum body is O-ring sealed for water-resistance; Approx 2 1/4" long and 1 oz. with batteries. State Color. Light up the night with the most powerful mini Flashlights going. Choose yours today! Streamlight Key-Mate LED Keychain Light