Oral Irrigator, Matte Black Rechargeable Cordless Water Flosser, Professional IPX7 Waterproof 3 Modes Dental Cleaner with High Capacity Water Tank and 4 Replacement Nozzles High pressure pulsed water column - More effective in eliminating the surface stains and gaps between the teeth. 360° rotating nozzle gum care, and sensitivity relief. 3 Operating modes - Normal, Sensitive & Pulse Long battery life & waterproof - Up to 2 weeks of battery life after full of charge. Large capacity tank - 180ml water tank with 4 replacement nozzles, the reservoir is removable and easy to clean and refill.