Waterpik® created the Cordless Advanced 2.0 Portable Water Flosser to be its best and most innovative cordless water flosser yet. It’s perfect for people on-the-go or those who want to water floss, but don’t have the space for a full-sized unit. It’s also waterproof and may be used in the shower. Advanced features include a new rapid magnetic charge system, an extra-quiet design, electronic pressure control system with 3 settings, 360-degree tip rotation, and an easy-to-fill reservoir with 45 seconds of water capacity.