Water Flosser Waterproof 3-Mode Teeth Whitening USB Rechargable Water Dental Flosser Cordless Oral Irrigator For Home and Travel  Use UPGRADED: Adopts intelligent water filtration system to automatically release more negative oxygen ions, which achieves better cleaning efficacy and healthier oral cavity 3 MODES & ROTATABLE NOZZLE DESIGN:Normal, Gentle and Pulse modes to meet various oral care needs. Waterproof:may be used in the showerIPX7 waterproof design is adopted in both internal and external to provide dual protection. Healthier Gums and Brighter Teeth in Just a Minute a Day!1400mAn lithium battery , can be used for a week once! Easily Cleanning:With a removable full-opening water tank makes the cordless water flosser easily washable.