This device is the portable h2ofloss water flosser designed for cleaning teeth and gums. Basic specifications: 5 pressure levels from Low to High to suit normal and sensitive teeth. Tank capacity 300 ml and more. Water resistance: Waterproof design (IPX7). Charging cable, fabric storage bag, and many other benefits. Price: 180. The serious buyer will not be disappointed, and its new price is 250. I just checked.