?One Year Warranty?ByDiffer promise to offer 1 year warranty. ?Large Capacity Battery Operated Flossers?The water flosser teeth cleaner can be used continuously for 20 days after only 4 hours after a full charge. The USB plug is suitable for various charging devices, such as mobile power supplies, computers, laptops, water cordless flossers very convenient for home or travel. ?Detachable Smart Water Tank & IPX7 Waterproof?Large 300ml water tank provides sufficient water for teeth cleaning without interruption of water addition. You can also add water by the smart hole design, no need to remove the water tank. At the same time, the removable water tank can thoroughly clean the internal dirt. IPX7 Waterproof design prevents water leakage can be used in the bathroom shower. ?5 Jet Tips & 360°Rotation to Clean Teeth Deeply?This ByDiffer water flosser is equipped with 5 nozzles, can be used with your family. It also has a 360° rotating nozzle design, specially designed for periodontitis, braces, dental implant. Our portable oral irrigator prevents various oral health problems such as bad breath, tooth decay, bleeding gums and yellow teeth. ?Latest Pulse Technique?Adopting 2021 Latest Water Flosser Pulse Technique, 30-120psi Pressure Range, 1800 Times/Min Pulse Rate, 360°rotating Long Nozzle, Low, Medium, High, Pulse, DIY, 5 Deep Clean Modes With Low-Noise Design, 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. ?Your Own DIY Mode? ByDiffer cordless flosser teeth cleaner is featured with customized DIY mode, allowing you to easily adjust to your most comfortable water pressure(30-120PSI). Suitable for sensitive teeth , also helpful for bleeding gums, bad breath, beneficial for brace and bridge care.