You'll never brush your teeth too hard with the Oral-B Pro 3 3000 White. The toothbrush has a pressure sensor. As soon as you press to hard on your teeth or gums, the ring on the toothbrush lights up. The toothbrush also slows down the brushing speed automatically. That's great, because you protect your gums this way. You can choose from 3 different brushing modes, so you can brush your teeth like you want. Do you have sensitive teeth or inflamed gums? Use the soft brushing mode. Thanks to the built-in timer, you know exactly when you have to brush another area in your moth, and when you've brushed your teeth long enough. Without charging, the toothbrush lasts about a week. The battery lasts 24 minutes.