1,600 Pulses Per Minute Maximum - Deeply cleans between teeth and below the gingival margin, utilizing a combination of water pressure and pulsations to clean deep between teeth and below the gum line where regular flossing can't reach. 3 Modes & 8 Nozzles - Select "NORMAL" for powerful removal of food particles, "SOFT" for gentle cleaning of sensitive teeth, and "PULSE" for massaging gums and rinsing. 300ML Detachable Water Tank - The extra-large 300ml water reservoir allows you to thoroughly clean the scales and dental plaque.