ADVANCED HANDHELD CORDLESS WATER FLOSSER: Waterpik Cordless Advanced features a handheld design with quiet operation and a rechargeable battery. Convenient charger connects magnetically and charges in 4 hours; LED indicator lets you know when it's time to recharge. GREAT FOR TRAVEL: Cordless Advanced is portable and global voltage compatible; it includes a micro-fiber travel bag, tip storage case, and water plug for use on the go. 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: 4 tips, 3 pressure settings (45-75 PSI), removable 7 oz (207 ml) reservoir (top-rack dishwasher safe for easy cleaning), 45 secs flossing time, rechargeable NiMH battery, charger (global 100-240VAC, 60/50Hz), 360 tip rotation, travel bag, tip case, shower safe. EASY AND EFFECTIVE: The Waterpik Cordless Advanced 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.