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Here is a link to a side-by-side comparison of the Waterpik Ultra and the Aquarius. https://www.waterpik.com/oral-health/products/compare/WP-660/WP-100/
Sorry, there was a problem. Please try again later.i had the Aquarius 660 and the motor failed in 1 year. this ultra model seems to be more durable, motor wise.
Sorry, there was a problem. Please try again later.Probably not much Both excellent They were both approved by our Dental Team
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