The Waterpik® Cordless Professional Water Flosser (WP-440) is ideal for patients who don't like to floss and for anyone with orthodontic appliances, implants, crowns, or bridges. The Cordless Professional provides 4 tip attachments, an advanced ergonomic design, rechargeable batteries, and an easy-to-fill reservoir. The convenient Dual-Pressure Control System, offers a Low setting for sensitive gums and High setting for deep cleaning. To meet your patient's tooth brushing needs, the Cordless Professional comes with a Nano-Sonic® Toothbrush. Its vibrating bristles break up plaque, and the high-low bristle pattern accesses plaque in hard-to-reach areas.