Great tasting water instantly. Attaches easily without tools. Eliminates 99% of lead, sediment, and chlorine (taste and odor). Electronic filter indicator, tells you when to replace the filter. Easy switch from filtered to unfiltered water. Easy-to-change filter. Filter snaps right into base. Lasts for 100 gallons or 4 months, whichever comes first. Refer to model No. 42401 (SKU 625841) or 42617 (SKU 618942) for replacement filter.