?USB PORTABLE CHARGING?The cordless water flosser easy to carry perfect for traveling, or use at home,office, hotel. USB cordless convenient for charging on power bank, table anywhere at anytime. The memory mode function of the Water Flosser can keep your frequently used mode for you. ?LASTING BATTERY OF DURABLE USAGE?Water flossers for teeth built-in with a 1200mAh rechargeable battery, the braces flossers with a powerful lithium battery, it can be used continuously for up to 40 times once fully charged. Its USB power cable makes charging it becomes a snap, which relieves you from the hassle of finding the adapter. Charge it easily with your phone charger, a power bank, or even your laptop. ?5 NOZZLES EQUIPPED WITH DIFFERENT FUNCTIONS?Water Flosser Cordless Waterproof 2 classic standard nozzles clean the between teeth, 1 periodontal nozzle suitable for deep cleaning the gum. 1 dental plaque nozzle can be used to clean the implants and porcelain teeth. And 1 tongue scrapper is suitable for cleaning tongue bacteria. 360°Rotatable nozzles allow you easily to clean areas that are difficult to reach and remove 99% of all plaque. ?300ML WATER TANK & IPX7 WATERPROOF DESIGN?Water dental flosser has 300ml detachable water tank design for uninterrupted oral dental flossing. No need to filling water multiple times. Leak-proof design and IPX7 waterproof is adopted in both internal and external to provide dual protection to ensure safely for shower in the bathroom. ?3 MODES DEEPLY CLEAN TEETH?Cordless Water Flosser Normal, soft and pulse mode to meet all different conditions of teeth and gums.