The Waterdrop TSU is a 0.01 micron ultra-filtration under sink water filter system with a 3-stage tankless design and premium brushed nickel faucet. It reduces over 30 substances including chlorine, PFAS, heavy metals, taste, and odor while retaining beneficial minerals, without wasting water or reducing TDS. Featuring a smart panel with filter life reminders, the UF filter lasts up to 24 months, CT filter 12 months, and PP filter 6 months, minimizing maintenance costs. Compact and space-saving at just 4.68"W x 13.97"H x 14.81"L, it fits easily under most sinks and includes all components for simple installation, offering cleaner, great-tasting water with lasting convenience.