Philips Sonicare ProtectiveClean 6500 Rechargeable Electric Toothbrush
Today
Typical price$200
Amazon: the cheapest today among the stores checked
Buy on AmazonPhilips Sonicare ProtectiveClean 6500 Rechargeable Electric Toothbrush or Waterpik Aquarius Water Flossers WP-663 & WP-667CD?
Cost the same today, across the stores checked.
Philips Sonicare ProtectiveClean 6500 Rechargeable Electric Toothbrush is the cheaperWaterpik Aquarius Water Flossers WP-663 & WP-667CD is the cheaper
The comparison in detail
Waterpik Aquarius Water Flossers WP-663 & WP-667CD
Today
Typical price$200
Amazon: the cheapest today among the stores checked
Buy on AmazonAffiliate links: if you buy, the store pays us a commission at no cost to you.
Both prices over the last 30 days
Sonicare ProtectiveClean 6500 Rechargeable Electric ToothbrushAquarius Water Flossers WP-663 & WP-667CD
First data point for one of the two: the chart appears as the days go by.
Still only a few days of data for both to read the trend; the chart fills in as the days go by.
Where is each one cheapest today?
Updated 09/11/2026
Sonicare ProtectiveClean 6500 Rechargeable Electric Toothbrush
- Amazon Lowest price$200Buy on Amazon
Aquarius Water Flossers WP-663 & WP-667CD
- Amazon Lowest price$200Buy on Amazon
Spec sheet side by side
| Item | Sonicare ProtectiveClean 6500 Rechargeable Electric Toothbrush | Aquarius Water Flossers WP-663 & WP-667CD |
|---|---|---|
| Specs | ||
| Type changes | Sonic | Rotating and others |
| General | ||
| Model changes | Sonicare ProtectiveClean 6500 Rechargeable Electric Toothbrush | Aquarius Water Flossers WP-663 & WP-667CD |
Other comparisons
Sonicare ProtectiveClean 6500 Rechargeable Electric Toothbrush orOral-B 4 x 1000 Pack$200Compare
Sonicare ProtectiveClean 6500 Rechargeable Electric Toothbrush orWaterpik Aquarius Water Flossers WP-662 Black and WP-660 White$200Compare
Aquarius Water Flossers WP-663 & WP-667CD orSoocas 3-in-1 Sonic Flossing Toothbrush$200Compare
Sonicare ProtectiveClean 6500 Rechargeable Electric Toothbrush orWaterpik Aquarius Water Flossers WP-663 and WP-662$200Compare- Aquarius Water Flossers WP-663 & WP-667CD orWaterpik Aquarius Water Flossers WP-662 Black and WP-660 White$200Compare
- Aquarius Water Flossers WP-663 & WP-667CD orWaterpik Aquarius Water Flossers WP-663 and WP-662$200Compare
How we choose
Source: Catalog of partner stores, checked on 09/11/2026.
Lowest price seen for the product in the stores we read, on the day it was read, before sales tax. The model is the brand plus the name of the electric toothbrush; the versions go in the table. The price range, the median and the position use only models with a score; the price comparison looks at models whose score is within 0.5 points.
The spec score doesn’t measure how well it cleans or durability, and the strong or weak point reading is just a comparison of numbers, not a buying recommendation.