?Product Warranty?The INSMART teeth cleaner is FDA approved, 12 months warranty and 30 days money back guarantee and friendly customer service. Please feel free to contact our customer service if have any questions. Professional technical support and always satisfied customer service all the year. ?IPX7 Waterproof & Operation More Safety?IPX7 waterproof design is adopted in both internal and external to provide dual protection, operation more safety, you can use this water pick with confidence when showering. The newly 300ML detachable cleanable upgraded water tank, holds enough water for 90-12 seconds of continuous flossing. The 360° rotating nozzle cleans hard-to-reach spaces between teeth for a deep cleaning effect. ?Long Battery Life & Carry on Size?This Water jet dental flosser built-in 2000mhA battery, it only takes 4 hours to fully charge and can be used for 21 days. Come with a USB cable can support power adapter, computer, car charger, power bank charging.The portable water flosser is cordless and lightweight, it also have a nice travel bag for easy transportation. Whether you are on a business trip or travel, you can easily meet the needs of deep oral cleaning. ?4 Cleaning Modes & Memory Function?Besides 3 traditional modes, this oral irrigator add a upgraded Memory mode, you can adjust the water pressure from 30ps to 120ps, especially for sensitive oral. Normal, Soft, Pulse modes meet various oral dental care needs. Memory Function helps keep on with your preferable mode for next use. It also comes with 4 water flossing tips so each member of the family can use it. ( Fill it with warm water would be better.). ?Deep Cleaning Teeth & Improve Gum Health?INSMART electric water flosser have rotating jet tips, with high pressure water pulse 1400-1800 times/min. This teeth flosser is designed to effectively remove plaque and food debris from between teeth and from in and around braces and dentures, leaves your mouth feeling cleaner and more refreshed than dental floss, beneficial for addressing issues like bleeding gums, and bad breath, and is suitable for orthodontic, bridge care, and braces.