The Oral-B Genius X limited edition is equipped with motion sensors & powered by artificial intelligence to recognise your brushing style & guide you to your best results every day. Now it's easier than ever to brush like your dentist recommends for a superior clean & for healthier gums. This beautifully advanced toothbrush protects your delicate gums & helps prevent from future issues: the combination of the new revolutionary Gum Guard technology, 360 Smart Ring & Pressure Control alert you to reduce speed when you brush too hard & tell you where you overbrush for a gentler routine. Last, but not least, it comes with a lithium-ion battery that lasts more than 2 weeks with 1 full charge. With Oral-B Genius X limited edition, you can't go wrong in brushing. No wonder Oral-B is the 1 recommended brand by dentists worldwide.