i3T Carbon Fiber: Exquisite Craftsmanship, Superior Quality: Using a fusion of the carbon fiber and aluminum alloy involves curing, baking, grinding and many other manufacturing processes, the i3T EOS carbon fiber eventually reveals its impeccably refined appearance. AAA Battery: 180 lumens output achieved with just a single widely available AAA battery. Portable Simple Operation: Easy to carry in a pocket or clipped to a hat brim with its lightweight and palm-sized Carbon Fiber body. Tail switch operation for momentary/constant on and quick mode changing (5/180 lumens). Output: 180 lumensRuntime: 16 hoursBeam Distance: 60 meters Battery 1 x 1.5V AAA Alkaline Battery (Included) Size 89*15mm