describe: 1. Our water filtration system works without electricity, has a flow rate of up to 1400 ml per minute, and the water filter pump can filter up to 3000 liters. Quickly turn rainwater, lake water, and river water into clean drinking water. It can provide delicious pure water to meet your various outdoor water needs. 2. The outdoor pump water filtration system uses medical-grade 0.01 micron hollow ultrafiltration membrane, which can remove up to 99.99 of tiny substances, particles and sediments. Composed of high-quality coconut activated carbon fiber, it effectively removes pollutants and odors from natural water, making it safe to drink even in the wild 3. After using it for a period of time, you can open the filter element and rinse it repeatedly with clean water to remove stains, and the filter will return to its new state 4. The outdoor water filter pump has a net weight of approximately 254g and a size of approximately 23.5*8.1*4.9cm. It easily fits into your backpack so you can take it with you and keep delivering water. 5. Lightweight and portable, easy to use and easy to carry. Just dip the straw in water and pull the handle up and down to get clean drinking water. Package contents: 1 piece water purifier