This is an outstanding product! It's my second Waterpik - the first lasted over 10 years. It has been the single best contributor to my overall oral hygiene and good health.
This Waterpik is smaller than my last one but the tank holds enough water and works really well. There is also a toothbrush attachment to use as the water comes out. It is manual but if you are in a rush and cannot do both in between meals it is perfect.