The unit works fine and it does a good job, but it is too noisy and considerable vibration.
I would recommend this to a friend!
Response from waterpik.comBy WaterPik, Product Support, April 30, 2021
Hello Hadi Z - Thank you for your feedback. The product is a motor-driven appliance. Some noise and vibration are normal. We stand behind the quality of our products and the warranties that come with them. This model carries a three-year warranty. If you have any issues, please let us know! We can be reached at 1-800-528-2774 or email smreviews@waterpik.com for assistance.
Great product from a company with great local support and service- you actually talk to a person in Fort Collins, CO when you have a question or a problem.
I love clean teeth and this waterpik does a wonderful job. It's easy to us and easy to clean after you clean your teeth. I use it every morning and every evening.