??important Notice?-After receiving the product, please charge the product as soon as possible to help extend battery life, If you have any questions or concerns, please contact us so we can help. Product support 1 year free replacement. Electric toothbrush adopts the advanced sonic cleaning technology, produces 41,000 brush strokes per minute for a powerful dynamic cleaning action Features: 5 clean modes offer varying oral care needs: ***Clean: Cleaning of stubborn plaque ,such as coffee ,smoke stains. *** Polish: Special designed for polishing front teeth. ***White: Normal daily teeth cleaning. *** Gum care: Gum-care mode , give your gums a massage. *** Sensitive : For sensitive teeth, gentle oscillation speed. 2 minutes smart timer with interval pause reminding each 30 seconds. 4 more replacement heads. Convenience USB Charging, 4 hours charging for minimum 20 days working with 2 times a day. Package Includes: 1 x Electric Toothbrush 4 x Replacement toothbrush heads 1 x Protective Bristle Cover 1 x Charging Cable without Adapter 1 x Instruction ManualMemory Function - The electric toothbrushes for adults and kids will remember the last selected mode for future use,more convenient and easy use.Easy Start gently eases you into the experience of using a electric toothbrush. Long Battery Life - As portable travel electric toothbrush, 1 time charge could last for 20 days regular use. Rechargeable toothbrush compatible with any charger or equipment with a USB port, automatically cuts off power after full charge. Please charging this smart electric toothbrush before a short journey, or pack the cable when you are in long journey. Smart Timer Reminder - 2 minutes tooth brushing timer with interval pause every 30 seconds, not only help you achieve the dentist-recommended time, also reminding you replacing brushing area for an effective clean.(Each interval pause of this electric toothbrush set is reminding you to change the brushing area). Using the smart toothbrush can help you establish good brushing habits. Brushing Modes - This Sonic electric Toothbrush upgraded with 5 modes: Clean(strong), Polish(strong invert frequency), White(gentle), Gumcare(gentle strong invert frequency) and Sensitive(soft), according your oral situation customize your brushing modes, keep your teeth healthy and strong for a lifetime. IPX7 waterproof that whole rechargeable waterproof electric toothbrush body washable, enjoy brushing your teeth in the shower. Sonic Toothbrush Tech - 41,000 micro-brush/min sonic dynamic cleaning to drive fluid gently pulses between your teeth and your gum line for exceptional cleaning and removing plaques, significantly whitening your teeth and efficiently improving your oral health. Take 2-4 weeks to see your difference with this electric toothbrush.