?60 days battery life, Wireless Charge, IPX7 Waterproof?- One 5 hours full charge last 60 days of normal usage (2 times per day), the largest battery capacity on the market with low battery reminding and automatically cuts off power after full charge. Ultra fast USB charging. Also, IPX7 waterproof to be used at bath and shower. ?Smart Vibrating Notification Timer?- Built in smart timer control, 30 seconds interval reminding you to move to the next quadrant of your mouth, and totally in 2 minutes(4 quadrants), which is highly recommended by professional dentists, as a correct brushing way. ?6 Replacement brush heads, "W" shape design?- Comes with 6 replacement brush heads to avoid order new replacement brush heads frequently. The bristles are made with DUPONT nylon, "W" shape design to suit teeth topography for thorough cleaning of gums and hard to reach areas. ?5 HIGH-PERFORMANCE BRUSHING MODES?- Clean(gentle) and White(strong) to suit different conditions of teeth of gums, long press to switch mode, so you can choose different modes according to your preferences and dentist's recommendations. ?POWERFUL SONIC CLEANING?- New Upgraded Electric Toothbrush with the latest sonic technology to drive fluid deep between your teeth and along the gum line for exceptional cleaning and removing up 100% plaques, whitening your teeth and improving your oral health in two weeks better than a manual toothbrush. We promise: 1 year warranty, if you have any problems, please contact us, we will give you a satisfactory customer service.