Waterfloss WF-450 Portable CordlessEffortlessly remove plaque, massage the gums and improve circulation with this advanced cordless water flosser that gets into those hard-to-reach corners of the mouth so that you can maintain dentist-quality oral hygiene.Removes up to 99.9% of plaque, preventing formation of calculus, also known as tartar.360 Quick-lock rotating nozzle enables you to direct tip to clean all quadrants of the mouth.8 Pressure Settings, between 30 to 120psi, select the most comfortable pressure to meet your dental needs.LED light indication, can check battery status.Removable 300ml large capacity water tank, easy for filling and cleaning.IPX7-Rated Waterproof design adopted both internally and externally to provide dual protection. Safe to use in shower.Automatic 2-minute shutdown protection, prevent unit from burning out due to over usage.2000mAh Rechargeable Lithium battery, USB-C charging port.Compact and lightweight body is easy to carry, convenient for travelling or on business.