Diamond-shaped wires help you achieve 100% white teeth in 1 week. The W2 Optimal White Spot Removal area consists of densely packed diamond-shaped wires. Eliminates surface stains caused by food and drinks. Youll find your smile is white (up to 100%*) in just 7 days. Optimal mode automatically selected for perfect results. ** Youll always get una optimal cleaning with our mode selection function via BrushSync **. The optimal white brush head of Philips Sonicare W2 syncs with the handle Philips Sonicare features BrushSync technology** to select the optimal brushing mode and intensity level for exceptional toothbrush cleaning. All you have to do is brush your teeth. Youll always know when to replace them. una Always optimal cleaning. Brush heads lose efficiency after 3 months of use, but with brush head monitoring, well prevent that before it happens. Your smart toothbrush records your brushing frequency and pressure to alert you when its time to replace the head. You dont have a smart toothbrush. Philips Sonicare? Just monitor the color of your wires. Change the brush when they go from blue to white.