Sejoy Portable Cordless Water Flosser can offer high pressure water pulse 1400-1800 times/min, 30-120PSI strong water pressure to remove 99.99% food residue hidden deep, massage the gum effectively and promoting blood circulation. Also helpful for bleeding gums, bad breath, beneficial for brace and bridge care.The powerful 1800mAh battery of this portable water dental flosser can be fully charged in 5 hours via USB cable and can be used continuously for 30 days, which is compatible with any charger or equipment with a USB port.It provides 5 Mode to deeply clean between the teeth and below the gum line, removing harmful bacteria and debris that cannot be reached by traditional brushing and flossing. With the 300ML water tank, it is enough for your whole mouth cleaning.