✓?12 Month Warranty and 24 Hours Customer Service? H2ofloss tooth flosser provides refund guarantee within 30 days and replacement guarantee within 12 months to ensure your satisfaction. Any question, you can contact with our customer after-sales service and we will solve your issues within 24 hours. ✓?420ml Removable Water Tank/ Light Handle?The 420ml reservoir can be emptied, cleaned and dried, unlike that of the all-in-one flosser which retains moisture and potential contamination. The handle is very light and this may well be of benefit to those with weak hands and older people. ✓?Prevent Blockage Protection & 30 Day battery Lasting Life? When the nozzle of the dental floss is blocked for more than 2 minutes, the machine will stop automatically. The water pick dental flosser is equipped with a rechargeable battery, featuring a 4-5 hour rapid charging for 15-30 days use at home or travel. ✓?5 Different Nozzles & 360 Degree Rotation Jets? Compared with brushing and flossing, the 360° rotatable water dental flosser can flexibly clean the parts below the gums, and the 5 different spray nozzles tips can effectively clean the braces, massage gums and prevent bad breath. ✓?Advanced Pulse Technology & 6 Water Pressure Modes? With 700-1300 times/min pulse frequency, the h2ofloss electric flosser can quickly remove 99.9% of food residues and effectively keep your gum health; 6 modes can be divided into 3 pressure levels: Soft mode: 45psi-55psi, Moderate mode: 75psi~95psi, Strong mode: 110psi ~125psi. Thus it can meet various dental cleaning needs of different customers.