Superior cleaning between the teeth and deep below the gum line. Waterpik Ultra Cordless Water Jet Flosser WP450 is clinically proven superior cleaning interdentally and deep below the gum line. The Waterpik Ultra Cordless combines a unique combination of pressure and pulsation to improve gum health. Ideal for everyday use before brushing, or for additional cleaning around dental restorations and braces. Quick and easy to use, for a clean refreshing sensation. UK 2-pin Mains shaver plug. No batteries needed.