The Waterpik Ultra Cordless is a portable, battery-operated water flosser ideal for use in the shower or while traveling. It uses water pressure and pulsating action to effectively remove bacteria and debris, offering a cleaning experience that surpasses traditional brushing and flossing. The device is waterproof, powered by 3 AA batteries, and features a removable 5-ounce water reservoir. It includes two pressure settings and 6 water flossing tips, delivering 1200 water pulses per minute. Clinically proven to remove up to 99.9% of plaque and improve gum health by up to 50% more than string floss, the product is ADA-accepted and comes with a 3 / year warranty.