Oral-B iO6 electric toothbrush with Magnetic Technology and Micro-Vibrations, Artificial intelligence, Interactive led display, Smart pressure sensor, Visible timer, 5 modes, 1 end, Travel kit, Black The light indicator informs you when it's time to change the brush head to get the best results. Gum protection The intelligent pressure sensor displays a red light when you brush too hard and a green light when you brush correctly. Sensational Oral B iO combines the round brush end with a delicate cleaning of the bristles with micro-vibrations.