Trekker Stormproof Lighter The Trekker has all the features of our other stormproof lighters, PLUS: Extra large fuel tank Over 1,000 ignitions on a single fill Easy grip rubberized case Includes wrist lanyard Fuel capacity of 4 grams Quadruple-refined butane fuel is necessary for use in all UST windproof lighters. Using less-refined fuels is not recommended. Standard Features: Catalyzer coil provides ultimate windproof flame Withstands winds of 70-80 miles per hour Burns with clean hot flame at 2,000 degrees Fahrenheit Flame Indicator Window located on side of combustion chamber glows when lighter is ignited Fuel Level Indicator visually reveals fuel level Piezo-Electric Ignition System eliminates need for batteries or flints, which fail when wet Piezo-electric system permits easy, one-handed operation good for over 30,000 ignitions Water Resistant O-Ring Seals keep water out when lighter cap is closed Optimum performance in altitudes up to 8,000 feet. Not intended for use in altitudes over 10,000 feet