Pump frequency at 1500 pulses/min.* for efficiently cleaning teeth where toothbrush is hard to reach removing food leftovers & prevention of periodontosis (* When water jet mode 2 is being used)2 modes of water jet coming out from nozzle with swivelling water stream for cleaning slits between teeth & periodontal cavity & massaging gum Extendable water tank for easy nozzle storage & handy carrying