The Phillips Sonicare DiamondClean 7 Series toothbrush 7 Series boasts the ability to clean your teeth and remove plaque 100% better than the average toothbrush, whitens your teeth in just one week, and, it gives you healthier gums in only two weeks. So if you thought your teeth were clean without it, you were clearly wrong. Also featuring a dual charging system with charger glass and USB travel charger system, your toothbrush can recharge from just about anywhere.