Dentist Recommended - Aqua Flosser has been clinically proven to be up to 5x more effective than traditional flossing while also being gentler on gums and teeth. A powerful and rechargeable lithium ion battery produces directed water jets to dislodge food and plaque. It also includes 3 convenient usage modes and 4 jet tips instead of just the standard 2 and a convenient travel bag. Compare Aqua Flosser to more expensive competitors that aren't nearly as effective.