The advanced design of this compact professional model includes pulse-modulation technology for maximum plaque removal (Floss Mode) and enhanced gum stimulation for improved circulation (Hydro-Pulse Massage Mode). This model comes with 7 flossing tips, 10 pressure settings, a convenient 1-minute timer with a 30-second pacer to ensure thorough water flossing of all areas, and a water on/off button in the handle that allows for one handed operation. Great for people with implants, braces and those with crowns, bridges, and veneers Barely used maybe once or twice.