LIFESAVER Systems 4000 Ultra Filtration Water Bottle none Imported Ultra-filtration water bottle for traveling, hiking, or emergency use Chemical-free process eliminates all microbiological waterborne pathogens Activated carbon filter treats 750 ml of water in just under 1 minute Each replaceable filter treats up to 4,000 liters of water Watertight, snap-fit lid; weighs 22 ounces; 2-year warranty The lifesaver 4000 ultra filtration water bottle eliminates all microbiological waterborne pathogens from water without chemicals Bottle uses replaceable filters, which can treat up to 4,000 liters of water The bottle treats 750 milliliters of water in just under a minute Drink filtered water directly from the bottle or filter and store water in other containers Two-year limited warranty