?Long Battery Life & One-Year Warranty? 1400mAh large capacity of rechargeable battery support 10-20 days continuously use once fully charged and the dual voltage for worldwide travel. Every BONSEN product comes with 1-Year Warranty. ?300ML Large Water Tank?The large-capacity water tank allows you to thoroughly clean the limescale and dental plaque, provides enough and uninterrupted water floss. ?IPX7 Waterproof & Portable?IPX7 waterproof design is adopted in both internal and external to provide dual protection. The intelligent design prevents leakage and allows the water flosser to be used safely for shower in bathroom. Cordless and lightweight, this portable water pick brings great convenience to your travels. ?6 Modes & Rotatable Nozzles?6 different modes to meet various oral care needs. The 360° rotatable nozzle design allows you to easily clean the areas that are difficult to reach such as gaps between teeth, inside teeth and gingival sulcus. And prevents debris and dental plaque. ?Latest Pulse Technique & Deep Clean?Adopt 2021 latest cordless flosser pulse technique, 10-110psi pressure range, 1900 times/min pulse rate, high intensity pulse water column cleans away 99.99% of teeth stain that traditional brushing and flossing can’t reach. It’s perfect for anyone with braces, implants, crowns, or periodontal pockets.