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Waterpik WP-660 vs. WP-670

Waterpik with ADA accepted

The world of oral hygiene home care is getting increasingly diverse when it comes to products. If you are looking to improve your routine there are no shortage of options out there to help you get it done.

That said with these options come the burden of decision making. It can be difficult determining exactly what you need in your oral health accessories especially when considering a somewhat obscure tool like the Waterpik.

Today we will demystify the shopping experience buying taking a comparative look at two quality Waterpiks, the Aquarius WP 660 and WP 670 to see which is right for your needs.

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Product Overview

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To start, both the WP 660 and the WP 670 are fairly advanced Waterpiks. Both are feature rich units that take advantage of contemporary technologies (like the timer/pacer) to ensure that users enjoy the best results possible.

Naturally given the nature of these products the critical selling point for each is their ability to remove plaque between teeth and along the gum-line.


Water floss alone the gum-line

In fact, both units make the promise that they are able to eliminate 99.9% of plaque around the areas of the mouth that the pick is applied to.

They also promise to be twice more effective at removing plaque than string floss and they guarantee that your mouth will be 50% more plaque free after 2 days of use than it was when you started.

As higher tier models, another part of the selling point for both units is how these results are achieved. Both the WP 660 and the WP 670 implement a wide variety of flossing modes and pressure settings – pressure range from 10 to 100 PSI, which ensures the process of teeth cleaning is as comfortable and personalized as possible.

[wpsm_box type=”blue” float=”none” text_align=”left”]All of our gums all have unique needs, and the various pressure settings will help to ensure that you don’t experience injury or discomfort during the flossing experience. Even at the highest setting both machines are of course designed not to cause damage, but if you have sensitive gums you will certainly appreciate the ability to adjust the pressure levels.[/wpsm_box]

Appearance and Designing

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Both units feature a medium sized water tank and the pick itself is equipped with controls on the handle that will empower its users to easily adjust the settings of the unit during use.

Water tank and handle controls of Waterpik WP 670

There are also controls on the base of the tank that allow you to further adjust the power levels, and rotate modes between floss and massage.

Different front plate of WP 660 (left) and WP 670 (right)

Different front plate of WP 660 (left) and WP 670 (right)

The only real difference on appearance between these two machines in terms of design is in color options, as well as a slight difference in finish. The WP 660 is available in white, black and blue, while the WP 670 includes more different choices including pink and teal.

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The overall design concept of both units is fairly typical of what one would expect to encounter in a contemporary Waterpik. You don’t really think of the design when you are talking about choosing a Waterpik, but nevertheless there is something to be said for getting something with some eye appeal.

Think about it: this piece of equipment is going to be taking up real-estate on your bathroom counter for the foreseeable future. Might it as well look good right? To say that the design features on either of these models are desirable is, of course, subjective, but it is fair to say that they keep in line with contemporary standards for the design concept. It’s a classy design with plenty of pleasing modern touches.

Waterpik in the bathroom

[wpsm_box type=”blue” float=”none” text_align=”left”]If you are really into the design component, the WP 670 is probably going to be the unit for you. In fact, the truth of the matter is that the real differences between these two machines are almost entirely cosmetic. Shoppers looking for a stylish Waterpik are sure to appreciate the multiple color options, chrome finish, and LED display of the WP 670.[/wpsm_box]

Differences between Waterpik Aquarius WP-660 and WP-670

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We will now take a look at a few of the key differences between these units in order to help you make a buying decision.


The tech on these two devices is actually ostensibly indistinguishable. Both enjoy the same 10 pressure settings (similar to dental water jet pressure) and an impressive 90 seconds of water capacity.

You are also getting a timer and pacer component that will help you to make sure that your sessions are as long and thorough as you need them to be. The timer runs for 90 seconds, and the pacer goes off every 30s to ensure that you cover every area of your mouth.

Besides, both machine has the 2 separate flossing modes including flossing and pulsating – 400 ml flow rate and 1400 pulses per minute.

  • The first mode is the typical floss mode that will be great for everyday use. The normal floss mode is which you are going to use the same way feels like a traditional roll of string floss.
  • The massage or pulsating mode is a special approach which is going to be used to a more relaxed style to your gum cleaning. Water is released in slower, pulsating bursts that massage the gums while still succeeding at removing increments of plaque. While this mode will also serve to clean your gums at least to a certain extent, it is much more relaxed and should not be used in substitution for the flossing mode.

Benefited from the above advanced technologies, both models are clinically proven to remove up to 99.9% of plaque from treated areas which is a critical component of good oral hygiene and overall wellness. To put this in perspective, the Aquarius Waterpiks also remove two to three times more plaque than traditional methods of flossing. These benefits are particularly prevalent for users with braces or fillings. If either of those situations describes your circumstance, you will find the orthodontic and plaque seeker tips particularly effective. Special circumstances aside they are also simply good picks for typical use as well.


The accessories are also the same. You get the same 7 Waterpik flossing tips regardless of which unit you decide to go with. The set comes with a brush head tip, a plaque seeking tip, and an orthodontic tip. Realistically speaking most users are not going to fully utilize each and every one of these tips but they are definitely good to have for the flosser looking for the most options possible. As mentioned earlier the tips also come with a storage case that will be convenient for day to day use.

7 water flossing tips included

7 water flossing tips included

The only differences…

The first thing is the WP 670 series offers an extra plain tips storage case (able to store and carry 4 tips). It will cost about $15 for a 6 tips case if you want to buy it separately.

Flossing tips case of WP 670

The second difference is that you are getting between these 2 units comes in the form of appearances. As mentioned above, the WP 670 comes with more color options and a slightly overhauled display that is exemplified mostly by the glossy and chrome buttons.

The difference in appearance is really pretty slight but if you want a custom appearance, the difference in price between the WP 660 and the WP 670 is insubstantial enough that it might be worthwhile for you.

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Pros & Cons

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Now that you have a basic understanding of both Waterpiks, let’s take an in-depth look at the Pros and Cons of both of these units in order to help you make your ultimate buying decision.

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  • Tips: Each unit comes with an impressive seven water flossing tips. Some of the seven are just refilled so that you don’t have to go out to the store shortly after buying the unit to pick up more. The rest are variations that will help you to diversify your flossing experience.
  • Pressure Settings: The 10 pressure settings that come with both models are a really important feature to have because they will help to ensure that each user has the opportunity to enjoy the flossing experience of their preference.
  • Timer/Pacer: The timer/pacer components of these devices are designed to ensure that you get the most out of your flossing experience. It’s a very simple feature, but it will also help ensure you get your money’s worth out of the pik.
  • Multiple Modes of Use: The WP 660 and the WP 670 come with 2 different modes of use which diversify the depth of your experience. The massage mode is a unique feature that most people probably are not going to use on a regular basis, but it is still nice to have.
  • Efficient: Ultimately the most important feature for both of these units is the degree to which they are effective. In that capacity both succeed spectacularly. The manufacturer promises that you will have fifty percent better gum health after only two weeks of using either pik.
  • Trusted: These models are the first products of their class to be endorsed by the American Dental Association (ADA) so you can trust without any uncertainty that you are truly following the doctor’s orders when you use these high-quality piks.



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  • 120V Only: Both the WP 660 and WP 670 are compatible with 120VAC/60Hz power outlets, they are for use in North America only. It is one of the biggest disadvantages for those potential users living in other countries.
  • Noisy: Noisiness is not necessarily a factor that you would expect to encounter with a Waterpik but it actually is a factor here. Both units (but particularly the WP 670) are noticeably noisy to the point that some users might find them a little bit irritating. Now does this feature make or break the Waterpiks? No, and since it has no impact on the actual utility of the tools most users probably won’t even think twice about it. Still, if you have sensitive ears you might find these picks irritating.
  • Similar to previous models: People who have been using Aquarius products for a long time have noticed that in terms of actual performance, these units are very similar to previous iterations. On the one hand this is somewhat to be expected. After all, plushy features aside the actual performance of a Waterpik probably is not going to very much from unit to unit. Still, if you already have a working Aquarius Waterpik you may be better off just sticking with what you have got. On the other hand, the if you are trying to get in on some of the new features, the WP 660 or the WP 670 are going to get you them.




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As you can see there is much to be said for both of these Waterpiks. That said the question still remains: which of these Waterpiks is right for your needs? Ultimately the answer to that question is going to depend on what you are hoping to get out of your Waterpik.

Both of these picks fall into the upper tier of the price spectrum in terms of what you can expect to see with products of this nature. This is particularly true of the WP 670 which is generally priced higher than the WP 660 but the difference in price is actually relatively arbitrary. If you are trying to save money you will be better off getting the WP 660, but you will probably be best off looking for a cheaper pick altogether. However, the pricing on these picks is what gives you some of the more premium features that you are getting here.

If you are looking to get the most affordable option possible your search is most likely going to begin and end with the WP 660. It’s a slightly older and simpler model than the WP 670 and for that reason you should generally be able to find it priced a little bit lower than the WP 670.

On the other hand if you are the type of person that wants the best and newest the WP 670 is probably going to be more up your alley. As discussed earlier this unit is a little bit more visually appealing which may appeal to the shopper that desires the best of the best.

One more thing to remind, all the water floss is relatively heavy and huge – because of the water tank, You can consider to have an air floss with good portability if you are a frequent traveler.

Now that said both of these Waterpiks are of a high quality and either should do a great job of assisting you in your oral hygiene routine.

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