Oral-B iO Ultimate Clean Black with Color Indicator (8 units)

With the iO Ultimate Clean Black with Color Indicator (8 units), you can brush your teeth for 2 years without any worries, and you'll know exactly when you need to replace your brush attachment. The color of the bristles change over time. This way, you'll know exactly when it's time for a new attachment. The bristles remove plaque from deep between your teeth and molars, thanks to their 16 degree angle. The bristles adapt to your teeth. This way, you'll thoroughly brush your teeth without missing any spots. If you brush your teeth twice a day for 2 minutes, you'll have to replace your brush attachment every 3 months