1.220ml Detachable Water Tank & 4Replaceable NozzlesThe removable full-opening water tank allows you to thoroughly clean the limescale and dental plaque, which is impossible for common oral irrigatorsOur water flosser is equipped with 5 different Dental Oral jet nozzles and 1 Nasal Jet nozzle for use by family members to keep oral health together. 2.Long Battery Lifetime & Patented Magnet Charging via USBOur rechargeable oral irrigator with powerful lithium battery is able to be used continuously for 60 days once fully charged(Use Once a Day). The Magnet USB charging design is applicable to a variety of charging equipements. 3.4 Modes & 360 Rotatable Nozzles & Memory FunctionNormal, Gentle,Strong and Pulse modes to meet various oral care needs. The 360rotatable nozzle design allows you to easily clean the areas that are difficult to reach and prevents debris and dental plaque,You could set your favorite mode before turning it on, and the favourable memory function helps keep your favorite mode for the next use. 4.Reinforce WaterproofThe Reinforce Waterproof design is adopted in both internal and external to provide dual protection. The intelligent design prevents leakage and allows the dental flosser to be used safely for shower in bathroom. 5.Portable Design for TravelCordless and lightweight, this portable water flosser is ideal for travel.