Waterpik Professional WP-563 Oral Irrigator, Portable, 4 Cleaning Heads, 3 Pressure Settings, Magnetic Charging, Blue Classic brushing is not enough! The Waterpik oral irrigator offers a unique combination of pressure and pulsations to clean both interdental and subgingival spaces, removing bacteria and deposits that traditional brushing or flossing cannot remove. The Waterpik Cordless Advanced WP-563 oral irrigator was created to be the best and most innovative cordless oral irrigator ever.