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Oral Irrigator Waterpik WP-660EU White 650 ml (Refurbished A+)
Oral Irrigator Waterpik WP-660EU White 650 ml (Refurbished A+)
Oral Irrigator Waterpik WP-660EU White 650 ml (Refurbished A+)
Oral Irrigator Waterpik WP-660EU White 650 ml (Refurbished A+)
Oral Irrigator Waterpik WP-660EU White 650 ml (Refurbished A+)
Oral Irrigator Waterpik WP-660EU White 650 ml (Refurbished A+)
Oral Irrigator Waterpik WP-660EU White 650 ml (Refurbished A+)
Oral Irrigator Waterpik WP-660EU White 650 ml (Refurbished A+)
Oral Irrigator Waterpik WP-660EU White 650 ml (Refurbished A+)
Oral Irrigator Waterpik WP-660EU White 650 ml (Refurbished A+)

Oral Irrigator Waterpik WP-660EU White 650 ml (Refurbished A+)

(2,775 reviews)

The easy and more effective way to floss, the Ultra Professional Water Flosser is the most advanced water flosser ever. New pulse-modulation technology provides maximum plaque removal (Floss Mode) and enhanced gum stimulation and improved circulation (Hydro-Pulse Massage Mode). The convenient 1-minute timer with a 30-second pacer ensures thorough water flossing of all areas. The Waterpik Water Flosser is clinically proven to be more effective than traditional dental floss for reducing plaque, gingivitis, and bleeding gums. And it is perfect for anyone with braces or implants, and those with crowns, bridges, and veneers.

The easy and more effective way to floss, the Ultra Professional Water Flosser is the most advanced water flosser ever. New pulse-modulation technology provides maximum plaque removal (Floss Mode) and enhanced gum stimulation and improved circulation (Hydro-Pulse Massage Mode). The convenient 1-minute timer with a 30-second pacer ensures thorough water flossing of all areas. The Waterpik Water Flosser is clinically proven to be more effective than traditional dental floss for reducing plaque, gingivitis, and bleeding gums. And it is perfect for anyone with braces or implants, and those with crowns, bridges, and veneers.

$78.55 - $293.36

in 3 offers

The lowest price for Oral Irrigator Waterpik WP-660EU White 650 ml (Refurbished A+) right now is $78.55 at eBay.com.au, compared across 2 retailers.

The all-time low was $46.80 on 6 June 2026 — today's price is 68% above the lowest ever. It has been notably cheaper before — worth setting a price alert.

Prices last updated 15 July 2026.

Oral Irrigator Waterpik WP-660EU White 650 ml (Refurbished A+)

$78.55

(2,775 reviews)

The easy and more effective way to floss, the Ultra Professional Water Flosser is the most advanced water flosser ever. New pulse-modulation technology provides maximum plaque removal (Floss Mode) and enhanced gum stimulation and improved circulation (Hydro-Pulse Massage Mode). The convenient 1-minute timer with a 30-second pacer ensures thorough water flossing of all areas. The Waterpik Water Flosser is clinically proven to be more effective than traditional dental floss for reducing plaque, gingivitis, and bleeding gums. And it is perfect for anyone with braces or implants, and those with crowns, bridges, and veneers.

The easy and more effective way to floss, the Ultra Professional Water Flosser is the most advanced water flosser ever. New pulse-modulation technology provides maximum plaque removal (Floss Mode) and enhanced gum stimulation and improved circulation (Hydro-Pulse Massage Mode). The convenient 1-minute timer with a 30-second pacer ensures thorough water flossing of all areas. The Waterpik Water Flosser is clinically proven to be more effective than traditional dental floss for reducing plaque, gingivitis, and bleeding gums. And it is perfect for anyone with braces or implants, and those with crowns, bridges, and veneers.

Price comparison

Price data powered by pricesAPI.io

Last updated at 15/07/2026 03:15:01

Please note: price history and price alerts are not available for some stores, including Amazon.com.au.
eBay.com.au

$78.55

Waterpik Aquarius Water Flosser - White (WP-660)

Affiliate Disclosure: We may receive a small commission for purchases made through this link at no extra cost to you. This helps support our site. Thank you!

eBay.com.au

$141.66

Waterpik Wp-660 Aquarius Water Flosser - White Oral Care Teeth Mouth

Free delivery

Affiliate Disclosure: We may receive a small commission for purchases made through this link at no extra cost to you. This helps support our site. Thank you!

GoSupps.com

$293.36

Ultra Professional Waterflosser Fixed oral shower with 7 attachments pressure range of 0.7-7 bar can be adjusted via 10 pressure settings integrated

Delivery between 16–28 July $28.61

Price history

Price history

Please note: price history and price alerts are not available for some stores, including Amazon.com.au.

Reviews

9 September 2023erica.l

originally posted on influenster.com

Traditional flossing can be very annoying. Takes a long time and sometimes irritates the gums. The waterpik is simple to use, quick and does not cause irritation. It makes my teeth feel cleaner than traditional floss. It is a lot easier to use than string floss. There are many different models but the 660 is simple and does the job. There are different types of arrangements depending on your dental needs. Great for patients with pockets as they have a special tip to get into the pockets.

12 March 2023lina.t

originally posted on influenster.com

I had no idea how much food particles were left in my mouth. Using this Aquarius Water Flosser makes remove all of them. I feel so clean. At first, I had to try the lowest levels for my gums to get use to the force. Now I am using level 10 with no problem. The force is strong. The hose is long enough, but not too long. Cleaning tip: I run the flosser with vinegar twice a week to prevent mold. After each use, you should put the hose down in the sink to let the water run out completely and dry them up. There are many types of tip to choose from for different uses. I love that. It only has spaces for only two tip, so if your family has more than two members, you should buy a box for the tips on Amazon.

Great product to have. I feel it is a must have.
5 February 2023Emmanuel B

originally posted on waterpik.com

I was hesitant to purchase this product when I first saw it. The product in general was suggested by my hygenist. She did not specify which product to purchase but just gave me a general ideal. I saw this product and went with it. I am glad I did. The fact that I can adjust the strength of the water stream is a big plus. The adjustable water stream strength was one of my requirements and it paid off on this product. I highly recommend this product. I prefer the water pik over the traditional string floss.

Price comparison

Updated about 12 hours ago
Please note: price history and price alerts are not available for some stores, including Amazon.com.au.
eBay.com.au

$78.55

Waterpik Aquarius Water Flosser - White (WP-660)

Affiliate Disclosure: We may receive a small commission for purchases made through this link at no extra cost to you. This helps support our site. Thank you!

eBay.com.au

$141.66

Waterpik Wp-660 Aquarius Water Flosser - White Oral Care Teeth Mouth

Free delivery

Affiliate Disclosure: We may receive a small commission for purchases made through this link at no extra cost to you. This helps support our site. Thank you!

GoSupps.com

$293.36

Ultra Professional Waterflosser Fixed oral shower with 7 attachments pressure range of 0.7-7 bar can be adjusted via 10 pressure settings integrated

Delivery between 16–28 July $28.61

Price history

Price history

Please note: price history and price alerts are not available for some stores, including Amazon.com.au.

Reviews

9 September 2023

Traditional flossing can be very annoying. Takes a long time and sometimes irritates the gums. The waterpik is simple to use, quick and does not cause irritation. It makes my teeth feel cleaner than traditional floss. It is a lot easier to use than string floss. There are many different models but the 660 is simple and does the job. There are different types of arrangements depending on your dental needs. Great for patients with pockets as they have a special tip to get into the pockets.

erica.l originally posted on influenster.com
12 March 2023

I had no idea how much food particles were left in my mouth. Using this Aquarius Water Flosser makes remove all of them. I feel so clean. At first, I had to try the lowest levels for my gums to get use to the force. Now I am using level 10 with no problem. The force is strong. The hose is long enough, but not too long. Cleaning tip: I run the flosser with vinegar twice a week to prevent mold. After each use, you should put the hose down in the sink to let the water run out completely and dry them up. There are many types of tip to choose from for different uses. I love that. It only has spaces for only two tip, so if your family has more than two members, you should buy a box for the tips on Amazon.

lina.t originally posted on influenster.com
Great product to have. I feel it is a must have.
5 February 2023

I was hesitant to purchase this product when I first saw it. The product in general was suggested by my hygenist. She did not specify which product to purchase but just gave me a general ideal. I saw this product and went with it. I am glad I did. The fact that I can adjust the strength of the water stream is a big plus. The adjustable water stream strength was one of my requirements and it paid off on this product. I highly recommend this product. I prefer the water pik over the traditional string floss.

Emmanuel B originally posted on waterpik.com
Great product with one issue
8 November 2023

The performance of my model WP-660 is outstanding. Unfortunately after a year the water pressure began to become weak and sporadic. Eventually the motor completely stopped. The culprit was the thermal fuse blew. I began watching numerous YouTube tutorials and came to the conclusion that this is a common problem. Moving forward, this fuse should be replaced with a fuse that can be switched out with a new fuse without soldering wires and having to go through voltage testing. My warranty was still active so I reached out to corporate and they were fantastic. After stating the problem, the agent quickly processed my complaint and sent me a new replacement. Thank you Waterpik for supporting your consumers.

Jg68 originally posted on waterpik.com
I would reccommend a Waterpik Flosser
11 May 2023

Not as sturdy as I expected. It's very thin brittle plastic. The button can pop out of position if you push too lightly, which you really wouldn't want to manhandle this unit. The 30-second timer seems faulty as it works sometimes and doesn't work sometimes. I wish the tank was a little bit bigger so I can do my flossing then massaging but refilling isn't a huge deal. Because of the size of the tank, massaging/water goes out awfully fast. Not sure how to make sure I have all the hoses and accessories really cleaned- seems it is questionable, since there's no way to see inside the unit or part of the accessories. I am happy with the unit overall but wondering if they have a more sturdy unit.

Bengel originally posted on waterpik.com
Not too hard to master
22 March 2023

I resisted getting a WaterPik due to the "mess" everyone complains about. I watched several videos, took my time and learned the technique. After one week, it was easy and not a big deal. I use the WaterPik twice a day. I really like the on/off switch on the handle itself. I don't like water dripping out of my mouth and running all over the place so I do one section with my lips closed, stop, spit out the water and continue. You have to figure out what works for you. I hope my dental hygienist sees results. My teeth feel better but there is no instant gratification. Also, I like just about 1 ounce of mouth wash in the water.

MimiGGG originally posted on waterpik.com
Upgrade from travel version totally worth it
30 December 2021

I purchased the blue version of the WP-660 to replace the battery powered travel version I purchased as a ā€œtrial,ā€ as I wasn’t sure I would use it daily. This version is definitely an upgrade. Besides the obvious advantage of not replacing batteries every week and filling the tank only once, the wand is significantly easier to handle, and I’m taking less time to waterfloss overall. The water stream is also much more even than the travel version. Overall happy with my purchase!Feature comments: I love the on/off feature of the stream on the wand; I use it when changing ā€˜quadrants’ in my mouth so there’s much less of a chance of wayward splashing. The 2x 30sec timer is lost on me; I must waterfloss too slowly. I wish the base unit was a bit heavier; it has a ...Ā MoreI purchased the blue version of the WP-660 to replace the battery powered travel version I purchased as a ā€œtrial,ā€ as I wasn’t sure I would use it daily. This version is definitely an upgrade. Besides the obvious advantage of not replacing batteries every week and filling the tank only once, the wand is significantly easier to handle, and I’m taking less time to waterfloss overall. The water stream is also much more even than the travel version. Overall happy with my purchase!Feature comments: I love the on/off feature of the stream on the wand; I use it when changing ā€˜quadrants’ in my mouth so there’s much less of a chance of wayward splashing. The 2x 30sec timer is lost on me; I must waterfloss too slowly. I wish the base unit was a bit heavier; it has a tendency to slide while using it. I appreciate the multi-tip kit included, which I’ll try out once I’m used to using the original tip.

SplashSplash originally posted on waterpik.com
Waterpik
17 May 2023

I bought this at recommendation of my dentist. I have two bridges and top bridge is tight and difficult for me to get flossing guide in. Using the water pik is so easy and it really flushes out area. I use it a couple times a day. I am 65 and have limited dexterity in my hands. I would recommend this item to anyone. I did not do any research other than read customer reviews. I did do some comparisons of different models and other brands of similar . This model just fit my purpose and price range and I preferred to get the Waterpik brand .

MJP123 originally posted on waterpik.com
Way better than flossing
11 June 2023

So far, I am impressed with how well the wp660 cleans my teeth. I am using both the standard and crown tips on alternate days. I'm leaning toward the crown tip as it seems easier to position. The main unit is working fine. The tip handle on/off button is a little awkward to use however I am hoping I will get used to it. Overall so far this is a great product and well worth the money. This unit was recommended by my dental hygienist and I hope to hear a positive report on my dental health at my next visit.

Secretariat originally posted on waterpik.com
Would not be without my Waterpik.
8 March 2023

I have owned a water pik for a long time maybe because my brother was a dentist and he highly suggested for me to use one. Now over 20 years later I swear that since using my Waterpik I have had the best dental visits. This Waterpik comes with plenty of attachments but I usually stay with about 2 main attachments. What I started doing from the very beginning was give my gums the same amount of time as my teeth. The fact that this Waterpik has a pause feature reminds me to move to another location. I also put a cap full of mouthwash into the well. By the way, my semi annual visit with my dentist again had no decay.

AJPennsylvania originally posted on waterpik.com

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