"Rechargeable and portable, the Cordless Plus offers 45 seconds of flossing time and is perfect for use in smaller bathrooms or for travel. This model comes with 4 tips, 2 pressure settings, and 360 degree tip rotation. Removes up to 99.9 percent of plaque from treated areas and is up to 50 percent more effective for improving gum health vs. string floss. Waterpik is the number1 recommended water flosser brand, clinically proven and accepted by the American Dental Association ADA."