This is a wonderful cleaner that lasts about 1 1/2 minutes when you fill the tank.It has speeds that are very low up to very high and is very effective at flossing your teeth for a very clean fresh feel.
I bought this after my dentist stated I should use a waterpik. I am very pleased with this product and it works so good that I'm surprised! Why haven't I used one in the past? Excellent product.