Water jet effectively cleans debris between teeth that was missed during brushing Fast and refreshing rush of water removes debris that causes plaque in hard-to-reach areas Intermittent water stream gently stimulate and massages the gums. Powerful water jet forces out bacterial and food debris from crevices brushing can\'t reach -With a maximum pressure of approx. 590kPa Washes away floating plaque in delicate periodontal pockets Compact and portable - after use push down so that the nozzle and unit fit inside on the water tank.Perfect for use at home or while travelling. Easy fill water tank - 165ml tank 100% waterproof, washable for hygienic maintenance Storable nozzle - compact and portable detachable nozzle 8 hours charging time Operating time - 15 minutes