?H2ofloss-Better Customer Support? Rest assured, our team is available 24/7 to address any inquiries or concerns you may have. Enjoy 30-days money back and 12-month quality guarantee. Any questions or concerns, please don't hesitate to contact us. ?Upgraded Gravity Ball Design? The portable water teeth cleaner picks adopts soft water tube with gravity ball design ensure water can come out completely no matter water direction the tooth picks leans when flossing. ?USB Cable & Extra Quite Design? The dental water jet flosser can be used for 15-30 days continuously with 4-5 hours fully charged. With the 1200 times/minute to deep clean your teeth and stimulate and massage the gums. Low noise allows you to use anytime. fully charged. With the 1200 times/minute to deep clean your teeth and stimulate and massage the gums. ?IPX7 Waterproof & 300ML Water Tank? Adopting IPX7 waterproof design makes water floss safely use for shower and bathroom. Upgraded 300ml detachable water reservoir allows to clean your teeth for uninterrupted oral dental flossing care. ?5 Modes Deeply Teeth Cleaning & 6 Nozzles Jets ?The efficient water dental flosser with 5 modes water pressure (range from 20psi-110Psi) optimizes your teeth health and 6 different flosser tips are helpful for those people who have braces, bridges and periodontal pockets, removing up to 99.99% of food debris and plaque and improving bad breath, bleeding gums.