Rechargeable and waterproof, the Cordless water flosser is ideal for smaller bathrooms, travel, and to use in the shower. It features a lightweight, portable design with an easy slide on/off switch, global voltage capability, and a rechargeable battery with up to 3 weeks of use per charge. This handheld cordless model comes with a Precision flossing tip for gum health, 2 safe and effective settings (low/high), and an easy-to-fill removable water reservoir with up to 45 seconds of flossing time.* Waterpik water flossers remove up to 99.9% of plaque bacteria that causes gingivitis, cavities, and bad breath from treated areas and are clinically proven up to 2X as effective as string floss for removing bacterial plaque, and clinically proven to reduce gum inflammation and bleeding gums in just 2 weeks.* Waterpik is the #1 water flosser brand recommended by dental professionals, and the Waterpik Cordless water flosser is accepted by the American Dental Association (ADA) for safety and effectiveness. *Using the low setting.