ADVANCED CORDLESS WATER FLOSSER: With a 360 degree rotating tip the can even reach back teeth! Waterproof rechargeable design with ~4 weeks of use, rapid magnetic USB charger & LED indicator. Backed by a 2-year limited warranty (see manual for details). PROVEN EFFECTIVE: Waterpik water flossers use PrecisionPulse technology to deliver a combination of water pressure and pulsations, removing up to 99.9 percent of plaque bacteria from treated areas that cause gingivitis, cavities, and bad breath. KEY FEATURES: 4 tips, 3 safe and effective pressure settings, 7oz removable reservoir (top-rack dishwasher safe), up to 45 secs floss time, recharge indicator, USB magnetic charger (wall adapter not included), 360 tip rotation, waterproof for shower use. GREAT FOR TRAVEL: The Cordless Advanced water flosser is portable and global voltage compatible; it includes a micro-fiber travel bag, tip storage case, and water plug for travel and use on the go. DENTIST RECOMMENDED: Waterpik is the #1 water flosser brand recommended by US dental professionals and the only water flosser brand to earn the Canadian Dental Association (CDA) Seal.