This dental floss has 3 operating modes and 1 replaceable nozzles to meet the daily oral hygiene needs of the whole family. Effectively clean interdental plaque, improve overall oral health, provide healthier gums and brighter teeth; IPX7 waterproof design is used inside and outside to provide double protection. The intelligent leak-proof design can be used safely even in the bathroom; its USB charging design and powerful lithium battery provide convenience and flexibility. Don't worry about running out of battery, it is very suitable for traveling. Professional cordless dental floss suitable for the whole family. 1. Fully open water tank; 2. IPX7 double waterproof; 3. 3 mode and rotatable nozzle; 4. It is loved by many users; 5. The water output frequency is as high as 1800 times per minute; 6. It is more effective in improving gum health. [Clean every corner with precision and depth: water dental floss uses a combination of high pressure and pulse flow technology to clean the area between the teeth and the gums that cannot be touched by traditional toothbrushes, thereby achieving good oral hygiene. Its professional design also makes it is more effective than traditional dental floss and is gentler on gums and teeth. Using the versatile and compact Cordless Express, you can easily floss wherever you are.