Multi-function handle - Release button helps to easily replace the nozzle. Nozzle rotates 360 degrees to easily treat all areas of the mouth. Water flow On/Off switch allows you to pause water flow.Easy operating control system with 10 settingsDelivers water pressure from 0 to 90PSI with 1400 pulses per minuteWhich includes 3pcs standard nozzles +1pc tongue scraper