Brondell H2O+ Pearl Countertop Water Filter System. WQA Gold Seal Certified Sleek and compact countertop design with powerful Carbon Block filtration Low cost maintenance  six month filter with quick and easy water filter replacement & continuous filtered water Fits 99% of standard kitchen faucets with provided adapters (not compatible w/ integrated pull-out or pull-down sprayer type faucets) Automatic filter replacement indicator & standard DIY installation in less than 10 minutes Tested and certified by WQA (Water Quality Association) & 1 year limited warranty (beware of non-certified products and false claims!)