The Water Flosser features advanced technology and premium performance. Power and mode control buttons are built into the handle (Radio Frequency technology) for one-handed operation. Quickly switch to Sensitive mode if you want to decrease water pressure while flossing sensitive areas. Removes up to 99.9% of plaque from treated areas and is up to 50% more effective for improving gum health vs. string floss. This model comes with 6 flossing tips, a convenient 1-minute timer with 30-second pacer to ensure thorough water flossing of all areas, and a 1-year warranty.