From the Manufacturer
The Streamlight Key-Mate FlashLight is the smallest, brightest 1 oz. LED flashlight. This tiny LED flashlight from is super bright, tough, and remarkably handy. It is so compact, you can carry it with you at all times. It provides 400% more lighting range than a penlight, and the reflector optics enhance the brightness of the LED (lighting two to three times the range of other keychain lights without optics). Streamlight flashlights are legendary for their dependability, and the Key-Mate is no exception. The Key-Mate's high-intensity, state-of-the-art LED lasts 100,000-hours, and the anodized, machined aircraft aluminum casing is virtually indestructible. Its high-capacity four alkaline button cells allow it to run longer (up to 96 hours run time) and stay brighter than any button cell keychain LED light. It also offers many extras: versatile powder-coated spring steel pocket clip; weatherproof - O-ring sealed; rotary head switch. Little chance you'll accidentally turn the it on. Plus, the Streamlight Key-Mate is a convenient tool. Snap the breakaway lanyard around your neck or wrist. Use the snap hook with swivel for quick attachment/detachment from your belt loops, backpack, zipper pull, or key ring. And its powder-coated spring steel pocket clip lets you clip Streamlight Key-Mate Flashlight to just about anything. It is 2 1/4-inches long and weighs .9 ounces. It is available in black or titanium with white, blue or green LEDs, and Realtree camo with green LED.
2.36 in. made of anodized machine aircraft aluminum casing in Titanium. 100000-hour white LED with a runtime of 96 hours. Takes 4-alkaline button cells. Weighs .9 ounce. Includes rotary head switch for constant on/off pocket clip breakaway lanyard & snap hook.