# Waterpik Aquarius WP-660: specs and price

**Price (US):** $99.99 at waterpik.com (MSRP $99.99 (frequently on sale ~$59.99) on official Waterpik store), as of 2026-06-27. A sourced, dated price of record — other retailers (incl. Amazon) may be lower. Among the 11 water flossers we track it is #7 cheapest of 11; category median $79.99.
**Brand:** Waterpik
**Released:** 2013
**Deskmark:** Silver Deskmark — pay-blind category standing 42/100, #5 of 10 in class (independent, computed from sourced data, never for sale).
**Price tracked since:** June 2026

## Specifications

| Spec | Value |
| --- | --- |
| Price (US) | $99.99 |
| Brand | Waterpik |
| Released | 2013 |
| Type | countertop |
| Tank capacity (ml) | 651 |
| Pressure settings | 10 |
| Max pressure (psi) | 100 |
| Tips included | 7 |
| Power | corded |
| Runtime min | 1.5 |

## Where it stands

At $100, the Waterpik Aquarius WP-660 is #7 cheapest of the 11 water flossers we track, where the median is $89.99. On the spec sheet, its pressure settings of 10 is the highest of the 11, its runtime min of 1.5 is the highest of the 8, and its release of 2013 is the lowest of the 7. By release date, it is the oldest of the 7 we date.

## Frequently asked questions

**How much does the Waterpik Aquarius WP-660 cost?**

The Waterpik Aquarius WP-660 has a US price of $99.99 (MSRP $99.99 (frequently on sale ~$59.99) on official Waterpik store), as of 2026-06-19.

**How does the Waterpik Aquarius WP-660 compare on price?**

At $100, the Waterpik Aquarius WP-660 is #7 cheapest of the 11 water flossers we track, where the median is $89.99.

**When was the Waterpik Aquarius WP-660 released?**

The Waterpik Aquarius WP-660 was released 2013.

**What are the Waterpik Aquarius WP-660's key specs?**

Waterpik Aquarius WP-660 (Waterpik): type countertop, tank capacity ml 651, pressure settings 10, max pressure psi 100, tips included 7. Full sourced spec sheet verified 2026-06-19.

Source: https://www.waterpik.com/products/dental-water-flosser/WP-660/ (waterpik.com, accessed 2026-06-19)
Corroboration: https://store.waterpik.com/products/wp-660 (accessed 2026-06-19)
Canonical: https://frontdeskreview.com/product/water-flossers/waterpik-aquarius-wp-660/
Cite: Per The Front Desk Review, the Waterpik Aquarius WP-660 price of record was $99.99 as of 2026-06-19 — https://frontdeskreview.com/product/water-flossers/waterpik-aquarius-wp-660/
License: CC BY 4.0. Price history: https://frontdeskreview.com/data/price-history.jsonl