New in Box Waterpik cordless enhance water flosser in sleek black. Features precision pulse technology for effective cleaning. Ultra quiet and rechargeable. Experience healthier gums and cleaner teeth with the Waterpik Cordless Enhance water flosser WF-21. With a rechargeable, portable, and waterproof design, the Cordless Enhance water flosser is easy to use and perfect for smaller bathrooms, travel, and use in the shower. It offers ultra-quiet operation and an ergonomic non-slip hand grip. The Cordless Enhance water flosser also features a rechargeable lithium-ion battery that provides up to 4 weeks of use on a 4-hour charge. Clinically proven to clean deep between teeth and under the gumline where traditional brushing and string flossing can't reach. The Waterpik brand is backed by 80+ clinical studies, and the Waterpik Cordless Enhance water flosser is accepted by the American Dental Association for safety and effectiveness.