At the recommendation of my dental hygenist, I was looking for a water pick that was affordable, and easy to operate, as well as effective. I decided to try the WP-450 and I'm so glad. It's all of these things and more. What used to be a real chore, (flossing my teeth) has become a simple procedure.
Mostly pleased with the device. Would be helplful if battery status was displayed somehow. I don't know how long a charge will last or how long I must charge to achieve a full charge.