Want to upgrade your brushing experience? The Philips Sonicare DiamondClean 9900 Prestige smart electric toothbrush is currently on sale in the US for only $229.96! • Original price $429.99, a drastic reduction of $200, an incredible buy! • Unique SenseIQ intelligent sensing technology automatically adjusts intensity to protect teeth and gums, with an AI App to help you improve your brushing habits. • Equipped with A3 Premium All-in-One brush head, with 2000% more plaque removal rate than manual toothbrushes, improving gum health and stains. • 5 cleaning modes, 3 intensity levels to meet your different needs, leaving your mouth feeling as clean as after a professional dental cleaning every time.