FlexCare Premium Whitening removes stain build up from coffee, tea, red wine, cigarettes and tobacco in just 1 week. Removes up to 10x more plaque than a manual toothbrush. Cleans along the gum line, removing plaque while stimulating gums. The end result is improved gum health in only 2 weeks. 4 Modes for Customized Oral Care: Clean mode- ideal for complete, whole-mouth cleaning. White mode- optimized for stain removal. Gum care mode- gently massages gums. Sensitive mode- gentle teeth and gum cleaning. Smart timer sets brushing time to two-minutes. Brush pacer interval timer encourages thorough brushing of each quadrant of the mouth.