The newly designed W9 uses touchless sensor activation for ultimate safety and a sleek water-dispensing experience. The W9 is designed to fit any of our filter combinations within its shell, giving a clean look. The W9 also has a self-contained leak detector and an internal five-stage RO filtration. The optional Bio-Sure Capsule provides continuous in-tank cleaning properties, even when the cooler is not in use. The W9 water cooler provides exceptional quality and a warranty to match.