The Windmill Trekker is windproof up to 80 mph and features an extra large refillable fuel tank (4 grams over 1,000 ignitions on a single fill) that burns for over 30 minutes. The easy grip rubberized case, and ergonomic design fits comfortably in hand. Optimum performance in altitudes up to 8,000 feet, not intended for altitudes over 10,000 feet. Includes wrist lanyard. Size: 3.7" x 1.2". Weight: 2.5 oz.