ESSENTIAL FOR GOOD ORAL HEALTH: The easy and more effective way to floss the Waterpik Nano Plus Water Flosser features full-size performance in a design that is 50 smaller than full-size models. It cleans deep between teeth and below the gumline where traditional brushing and flossing cant reach using a unique combination of water pressure and pulsations. And Waterpik is the first dental water flosser brand accepted by the American Dental Association (ADA). The Waterpik Nano Plus Water Flosser includes 4 color coded flossing tips for multiple family members and needs 5 pressure settings for a custom clean OnOff water control on the handle and it can be used with your favorite mouthwash. The Nano Plus removes up to 99.9 percent of plaque and is up to 50 percent more effective for improving gum health vs. string floss. Compatible with 120VAC60Hz outlets for use in North America Only.