Advanced 10 Pressure Settings for Personalized Cleaning: The COSLUS E40 cordless water flosser features 10 precise pressure levels, allowing users to easily adjust the water flow to match their unique oral sensitivity and cleaning preferences. Whether you have braces, orthodontic appliances, sensitive gums, or are buying for kids, teens, adults, women, men, or seniors—this flosser is designed to suit everyone in the family. The innovative stepless dial control works just like adjusting your phone’s volume, enabling smooth, one-handed pressure changes from level 1 to 10. Fine-tune the water pressure in real time without pausing your routine, for a truly comfortable cleaning experience

Advanced Research, Trusted Quality: Developed over six years by the COSLUS R&D team, this product features patented dual-flow technology for enhanced cleaning power and broader coverage. It effectively cleans stains and interdental deposits, addressing the needs of most users. Constructed with BPA-free, safety-certified materials, it provides a scientifically-backed, safe, and durable oral care experience

Ideal For Travel​​: The COSLUS E40 cordless water flosser features a compact, portable design, making it ideal for daily home use, office work, travel, and business trips. Equipped with a high-performance battery, a single charge provides up to 30 days of continuous use (based on 1-2 daily uses). The included USB fast-charging port ensures effortless maintenance of oral health routines both at home and on the go

Customizable Nozzle System: Comes with a variety of functional nozzles—including standard, orthodontic, and periodontal tips—to meet the needs of different users. Whether you wear braces, have sensitive gums, or seek deep cleaning, you’ll enjoy a targeted and comfortable oral care experience. Equipped with a 300ML large-capacity water tank, which allows for longer use without frequent refilling, making it more suitable for thorough, full-mouth cleaning and an efficient flossing experience. Supports multi-user sharing, making it especially ideal for family use and daily oral care routines

Ipx7 Waterproof & Long-Lasting Durability:​​ COSLUS E40 portable water flossers for teeth feature an IPX7 waterproof design, making them convenient to use even in the shower. The upgraded motor delivers a reliable and steady water flow, helping to improve the removal of surface stains and support oral care​​. With a lifespan twice as long as other products, it effortlessly handles daily use and routine cleaning, ensuring a more comfortable user experience

Note: Adapter is not included to avoid wasting resources, but you can charge it using any 5V adapter on hand. If need, get from COSLUS. NOTES: Packaging may vary (new or old), but the contents are exactly the same