The EW1611 oral irrigator uses high-pressure water jets to flush out food particles trapped in hard-to-reach places between teeth or in periodontal pockets, to remove tartar and to massage gums. It comes with a high-capacity water tank and a hose connecting it to the irrigator device. A single load of water lasts for multiple uses. Panasonic's original supersonic water jet technology has been further improved to optimize this product's ability to remove tartar.