Q & A Q: What is the benefit of using Waterpulse oral irrigator? A: Waterpulse oral irrigator will uses pressure and pulsation to massage your gum tissue, remove food, and break up plaque. and you will have fresher breath, pink healthier gum tissue after becoming adaily Water Flosser user. Q: Does it have any whitening efficiency? A:Using a Waterpulse Water Flosser is one of the easy and natural waysto keep your teeth sparkly white Water Flossing cleans off excess plaque that can make your teeth white, without causing tooth sensitivity as whiteningtreatments sometimes do. Q: How many times per day should I use my Water Floseer? A:To maintain good oral health, we recommends that you floss at least once per day and brush your teeth at least twice per day. And remember water flosseris not a substitute for a toothbrush, usingtoothbrushtogetherwith water flosser will get better effect. About V300: V300 Water Flosser powers away plaque and debris between teeth and below the gumline. 10 water pressure settings let you customize gentle-to-deep cleansing. 5 unique tips clean in specialized ways, while a spacious 800ml reservoir reduces the need for refills. Features: Voltage: 100-240V Frequency: 20-60HZ Input Power: 12W Hydraulic Pressure: 20-120PSI Mode: 10 level pressure setting Tank Capacity: 800ml Color: Green Blue Voilet   5 Tips Set Package Included: 1 x Oral Irrigator 5 x Water Flossing Tips 1 x Adapter (UK EU US AU 4 Types) 1 x English Manual