Experience complete clean with the Cordless Water Flossing system. Cordless design is perfect for travel or home. Fill water tank with water or mouthwash. Hi/Lo flow control. 60-Second tank capacity. Flushes out plaque and food debris. Regular use helps prevent gingivitis and gum disease. Safe and effective on all dental work including braces. Easy to use. Requires 2 AA batteries (NOT included).