Our upgraded cordless water flosser now features four professional water flow settings, including standing, massage, spot control, and DIY modes, with an adjustable psi range of 60-140. This water flosser also comes with a large 300ml detachable water tank that holds 10.82 fl oz of water and can run continuously for 60 seconds without refilling. The water tank can be easily removed for easy cleaning. This dental flosser is designed for portability. It is cordless, lightweight, and comes with six replaceable nozzles that can be rotated to meet all your dental needs, such as regular cleaning or gum massage. It is perfect for use at home, in the office, on business trips, or while traveling. This water dental oral irrigator is IPX7 waterproof and can be used in the shower or washed for easy cleaning. It comes with six 360 rotating nozzles and 4 modes, making it the best water flosser for teeth, gums, and braces, giving you a confident and bright smile.