Philips - Series 7900 Advanced Whitening Sonic electric toothbrush with app HX9631/18

Everything you need for great oral health Keeping up good brushing habits is tough. Series 7900 will guide you between dentist check-ups. Know when to adjust your pressure with built-in smart sensors and use the App's Progress Report to help you stick to your brushing routine. Whitens teeth in just one week Click on the W2 Optimal White brush head to remove surface stains and reveal a whiter smile. With its densely packed central stain-removal bristles, it's clinically proven to whiten teeth in just one week. Up to 7x more plaque removal than a manual toothbrush Up to 7x more plaque removal than a manual toothbrush Densely-packed, high-quality bristles remove up to 7x more plaque than a manual toothbrush. Lets you know if you're pressing too hard Lets you know if you're pressing too hard You might not notice if you're brushing too hard, but your ExpertClean will. If you need to ease up, this intelligent toothbrush will make a pulsing sound. It's a heads-up to let your brush head do the work. 7 out of 10 people found this feature helped them become a better brusher.