Transparent view window: Keep an eye on the status of the cartridge and clean it in time to extend the life of the filter. 7-layer Filtration: 2-40nm layer-by-layer filtration, filtering sediment, rust, and adsorbing up to 96% of residual chlorine. Contaminant Removal: The water purification faucet holder removes contaminants such as lead, chlorine, benzene and asbestos while retaining natural minerals and properties, leaving you with clean, fresh drinking water. Easy to install and use: The faucet water purifier is a simple setup that easily attaches to your faucet with no tools required. Compatible with standard faucets: Fits most faucets, not irregular, hand-held or pull-out faucets; Ergonomic, sleek design gives it an elegant look. Features: Transparent view window: Keep an eye on the status of the cartridge and clean it in time to extend the life of the filter. 7-layer Filtration: 2-40nm layer-by-layer filtration, filtering sediment, rust, and adsorbing up to 96% of residual chlorine. Contaminant Removal: The water purification faucet holder removes contaminants such as lead, chlorine, benzene and asbestos while retaining natural minerals and properties, leaving you with clean, fresh drinking water. Easy to install and use: The faucet water purifier is a simple setup that easily attaches to your faucet with no tools required. Compatible with standard faucets: Fits most faucets, not irregular, hand-held or pull-out faucets; Ergonomic, sleek design gives it an elegant look.