This model comes with 3 tips, 2 pressure settings, 3 AA batteries, and a 1-year warranty. Waterpik® is the #1 recommended water flosser brand, clinically proven and accepted by the American Dental Association (ADA). Removes up to 99.9% of plaque from treated areas and is up to 50% more effective for improving gum health vs. string floss. Capacity : 5 Ounces ( 148 ml )