Waterpik Aquarius Professional (WP-660) vs. Waterpik Ultra Professional (WP-660C): Key Differences
Waterpik Aquarius Professional Water Flosser (WP-660) and the Waterpik Ultra Professional Water Flosser (WP-660C). At first glance, these two models share a striking resemblance. Similarities Between WP-660 and WP-660C Both the WP-660 and WP-660C are designed with the user’s comfort in mind. They share the following key similarities: But with so many similarities, how do …