5-stage RO Filtration: Certified for safety with NSF/ANSI 372 lead-free material standard and SGS-tested. This CoreRO system uses premium 0.0001μm RO membrane to reduce TDS, PFOA, PFOS, Chlorine, Fluoride, Arsenic, Lead and more, providing you healthy water. Easy to Operate: This countertop reverse osmosis system has a smart touch screen for TDS real-time displaying and filter life monitoring. Enjoy the convenience of 5 adjustable water volumes and effortlessly customize your water volume with simple controls. NOTE: Before use, please make sure that the black protective film on the screen is removed to avoid affecting normal operation. Fits Every Countertop: Ideal for kitchen, office, or bedroom - its compact design fits every countertop. No installation hassle, just plug and play for immediate clean water access, simplifying your path to a healthier lifestyle. High-efficiency & Long-lasting: 3:1 water efficiency ratio designed to conserve water while being sustainable. Enjoy a composite filter with a 12-month lifespan, effortlessly replaceable within seconds for pure water anytime. NOTE: Do not work with well water or source water with high TDS ( 500). Portable Pure Water Tank: Experience pure hydration with detachable design. Ideal for daily use, its 34oz capacity beautifully meets your water intake needs. Conveniently fits into refrigerator, it adapts to your diverse drinking preferences with ease. Kindly note that the package includes just one portable pure water tank. Waterdrop C1S Countertop Reverse Osmosis System, 5 Stage CoreRO System, with Portable Pure Water Tank, Reverse Osmosis Water Filter Countertop, 3:1 Pure to Drain, Reduce PFAS, No Installation, WD-C1S