The most efficient microfilter-more water with less effort. High water output-perfect for individual and group camping. Pumps one liter of water in 36 easy strokes. Low-maintenance design-no cleaning required. Microfiltration method: AntiClog technology: 143 square inches of pleated 0.3 micron glass fiber media. Output: Up to 1 qt./minute (36 strokes/minute). Cartridge capacity: depends on water quality. Weight: 14 oz. Height: 9.5". Hose lengths: 36". Includes: Prefilter, universal bottle adapter and carry bag.