Description:The personal survival water filter has multiple filtration systems, pure physical, precision filtration, filtration accuracy can reach 0.01 microns, which can reduce up to 99.9999% of fine matter, ensuring clean and safe drinking water. Specification: Name: survival personal water filter Shell material: ABS Product size: about 30*200mm / 1.2*7.9in Filtration accuracy: about 0.01 microns Filtration efficiency: 4000L/1057 gallons Product shelf life: 5 years unopened Packing List: 1 * survival personal water filterNote: 1. The service life of the filter element depends on the water quality, please try to use water cleaning to prolong the service life.2. Multiple Ways to Use: The personal water filter can be directly connected to the drinking water source, or it can be connected to a water bottle or bag to store water.3. The size in the picture is manual measurement, there will be a little error, please refer to the actual product. Due to the lighting effects and shooting angles, there is a color difference in the product, please understand.