Gurin Professional Rechargeable Water Flosser Great professional tool! I just received this water flosser and I’m amazed of how great it works. It’s a great way to clean your teeth in between and in hard to reach places. I’ve always had problems flossing the back molars and with this is very easy. Description: High Capacity Water Tank Rechargeable cordless design. Universal Voltage: 100 to 240V~50/60Hz. Three operating modes for varying oral care needs: Normal Soft and Pulse. Rotating interchangeable nozzles great for multiple users. http://www.amazon.com/gp/product/B00XQ21G1Q?psc=1&redirect=true&ref_=oh_aui_detailpage_o03_s00 Please read the instructions first before using. If you have really sensitive teeth or gums, be sure to ask your dental hygienist before using. WebMD Quote: "Gums protect and support your pearly whites and the tissue that holds them to the bone. When your gums aren’t healthy, you risk losing those te