• BATTERY OPERATED HANDHELD WATER FLOSSER: The Waterpik Cordless Express Water Flosser is powered by 3 AA batteries and is designed for travel anywhere, use in the shower, and small bathrooms.
• NO OUTLETS, NO CHARGING: Includes 3 replaceable AA batteries (no outlets or charging needed) - assuming once a day use, replace batteries every 1 to 2 months, depending on quality of batteries.
• DENTIST RECOMMENDED: 9 in 10 dental professionals recommend the Waterpik brand. Waterpik is clinically proven and the first water flosser brand to earn the American Dental Association (ADA) Seal of Acceptance.
• KEY FEATURES: 2 flossing tips, 2 pressure settings (45-75 PSI), removable 5 oz reservoir (top-rack dishwasher safe for easy cleaning), 30 seconds of flossing time, 3 AA replaceable batteries, safe for use in the shower.
• EASY AND EFFECTIVE: The Waterpik Cordless Express water flosser removes up to 99.9 percent of plaque and is up to 50 percent more effective than dental floss for improving gum health. Just fill the reservoir with warm water, place the tip in your mouth, and start flossing.

 Open box and has been tested to work