The Waterdrop N1 is a 4-stage countertop reverse osmosis system that requires no installation, making it ideal for renters or flexible use in kitchens, bedrooms, or offices. With a 135 oz tank and smart display, it monitors TDS, filter life, water volume, and includes auto-flush and water shortage alerts. Featuring a 3:1 pure-to-drain ratio with drain water recycling and power-saving mode, it reduces waste and energy use. Its dual-cartridge filtration effectively reduces PFAS and other contaminants to deliver fresh, pure-tasting water, while filters offer long lifespans of 6 to 18 months for low maintenance. Compact at 17.1"L x 7"W x 15.6"H, it provides clean, convenient hydration without drilling or plumbing. | Waterdrop | | N1 Countertop Reverse Osmosis System Extra WD-10UA | White | Best Buy