The AquaView is the first and only faucet mount filtration system that lets you see what the filter removes from tap water. The AquaView provides proof your water is better - right before your eyes. AquaView's removable side panel exposes the filter unique window that allows you to see the filter changing color over time as it traps sediment from your tap water. Convenient lever allows easy shifting between filtered and unfiltered water. Electronic filter change light indicator. Unique, stylish design that fits neatly underneath the neck of your faucet, maximizing valuable sink space. Attaches easily to faucets without any tools, in just minutes. Certified by NSF International to reduce chlorine taste and odor, and remove 98% of sediment and less that may be found in tap water. Each filter provides 100 gallons of filtered water, approximately 4 months for the average family. Refer to model No. 42647 for replacement filter.