?WORRY-FREE MONEY-BACK GUARANTEE?-Sejoy water flosser offers a 30-day full money back guarantee without a lot of arguments. If you have any problem or dissatisfaction, please feel free to contact us and we will solve it for you. ?IPX7 WATERPROOF & 4 HOURS CHARGING FOR 30 DAYS+?-Our electic toothbrush is fully charged in 4 hours for 30-days performance.Great for carrying,travel and business. Sejoy Rechargeable Electric Power Toothbrushes with IPX7 rated waterproof design, so the entire toothbrush can be safely rinsed with water and user can safely use toothbrush in the bath or shower. ?2 MINUTE TIMER WITH 30 SECOND REMINDER?-Built in 2 minutes smart timer control to ensure scientific brushing time, 30 seconds interval reminding you to move to the next quadrant of your mouth.Help you develop healthy tooth brushing habits. ?7 TOOTHBRUSH HEADS FOR 2 YEARS USE?-Comes with 7 soft and flexible Dupont bristles brush heads.Each brush head lasts 3 months so 7 will last for over 21 months.Avoid order new replacement brush heads frequently. ?3 HIGH-PERFORMANCE BRUSHING MODES?-This electric toothbrush owns 3 modes (Clean,Sensitive,Massage)for adluts and kids. Clean Mode: for daily dental care; Sensitive Mode: for first-time users or sensitive teeth, friendly for the aged and teenagers teeth; Massage Mode: for strengthening your teeth. You can choose different modes according to your preferences and dentist's recommendations. ?POWERFUL SONIC CLEANING?-Sejoy Sonic Electric Toothbrush which has powerful 30,000 VPM ultrasonic motor removes up to 15x more plaque than manual toothbrush.Effectively removes plaque, prevents tooth decay and improves oral health.Give you a more confident and brighter smile.