The Katadyn Gravity Camp 6L you just fill, hang and you always have clean drinking water - and you won't have to pump a stroke. At the heart of the Katadyn Gravity Camp 6L is the newly developed Ultra FlowTM Filter Element. With its flow rate of up to 2 liters per minute, you can reliably filter bacteria, cysts and sediment. Cleans up to 1,500 liters of water. Water level indicator window easily identifies how much water you have. When you need to refill water, you can easily remove the tube with a quick-release valve equipped with auto shut off.. Whether brushing your teeth, washing up, or quenching your thirst, plenty of fresh water will always be available with the Gravity Camp 6L. Shower adaptor (available separately) One-Year AntiClog(TM) Guarantee on the filter element. Katadyn warrants your Ultra Flow Filter(TM) element to be free from defects that cause the filter to clog.