FeaturesDelivers water pressure from 0 to 90 psi with 1400 pulses per minute, 2 minute auto timer with a 30 second interval alert system.A unique combination of water pressure and pulsations cleans deep between teeth and below the gum line where regular flossing can't reach.Multi-function handle release button helps to easily replace the nozzle, nozzle rotates 360 to easily treat all areas of the mouth, water flow on/off switch allows you to pause water flow.