Deep Clean, Improve Gum Health, Freshen Breath: The COSLUS C20 water dental flosser boasts advanced 0.3mm+0.3mm ultra-fine dual-thread water pulse technology, professionally endorsed by an American dental team. This water dental pick delivers high water pressure pulses at 1400-1800 times per minute, effectively removing 3× more dental stains for deep cleaning. This water dental pick massages the gums, and addresses oral issues like bad breath. Detachable 300ml Extra-Large Water Tank: No need for frequent refills. This COSLUS C20 water dental flossers features an 300ml (10 OZ) water tank, twice capacity of other old models, big opening making it easy to clean and fill, making your oral cleaning more convenient, efficient. 5 Jet Tips, 360° Cleaning, Ideal for Braces: This water teeth cleaner picks with 5 replacement jet tips. The 360° rotatable nozzle allows easy cleaning in any angles, helping prevent tooth decay, dental calculus, gingivitis bleeding and dental hypersensitivity, suitable for people with sensitive teeth, children, the elderly, men and women, meet all your family’s different teeth cleaning needs. Super Long 30 Days Battery Life: Portable water dental teeth flosser is rechargeable and up to 30 days of battery life once full charged. Quiet design for morning and night use without disturbing others. Easy to Use: IPX7 waterproof, is safe to use in the shower after cover the charge port tightly. The upgraded motor provides dual-stream water flow for more effective cleaning and increased durability, lasting up to 3 years. What will you get? 1×Water Dental Flosser；5×Replacement Heads; 1×User Manual; 1×Charging Cable (Notes: Adapter not included) Applicable people:People with sensitive gums,dentist recommended user,wireless Lovers,smart features users,long battery life seekers. Applicable scenarios:Daily oral care,multi-user sharing,quiet operation,interdental cleaning,tongue cleaning,gum massage,travel-friendly,home use.