The Portable Mini Water Filter Pump can be used for outdoor adventures, fishing, emergency relief, camping, scouting, hiking, and military or whenever the need for safe drinking water. The Filter Pump provides the highest filtering accuracy. It can turn lake, stream, or standing water into safe and clean drinking water. It includes a three step filtration process that is unmatched. First is a pre-filter to remove sand, rust and other large particles. The next step is a carbon fiber filter which eliminates dirt particles, odors and heavy metals. Contrast this to granular Activated Carbon (GAC) used by competitors, which is not nearly as effective and sometimes leaves little carbon balls in the filtered water. The final filter is a medical grade 0.01 micron UF filter. This filter compared to popular competing products which have only 0.2 micron filtering. The Portable Mini Filter not only has superior filtering ability, but it is also built to last. Its steel insert draw bar provides strength and durability for reliability in the field when pumping water. The housing can resist pressure of at least 150 pounds. The UF Filter has up to 6,000L capacity. The Carbon Fiber filter (which eliminates heavy metals and unpleasant tastes) has a capacity of more than 1,000L but is easily replaced if used regularly with heavily contaminated or very dirty water. Replacement filters are available. It comes with a plastic cover that doubles as a container to pump water into. The 3 stage filter on the Mini Water Pump protect against protozoa, heavy metal, organic matter, smell, color, bacteria, viruses, and is suitable for turbid surface water. It does NOT require batteries. Comes carrying case, 2 hoses, 1 inlet hose with floater to keep pre-filter on top to retrieve the cleaner water, and 1 outlet hose. This unit can be used with the Portable water bottle(Sold Separately). You can pump water into the water bottle for even more filtration. It Measures 6 1/2" x 3" x 2"