| Brand | Philips Sonicare |
| Age Range (Description) | Adult |
| Special Feature | Brushing Timer, Ergonomic, Rechargeable |
| Power Source | Battery Powered |
| Item Firmness Description | Extra Soft |
Not Added
Philips Sonicare 2100 Series Electric Toothbrush - Sonic Toothbrush with Advanced Sonic Technology, Two Intensity Settings, Smartimer & Quadpacer, White, Model HX3661/04
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Purchase options and add-ons
Competitively priced item
| Brand Name | Philips Sonicare |
|---|---|
| Age Range Description | Adult |
| Included Components | 1 Philips Sonicare 2100 electric toothbrush, 1 SimplyClean (C1) brush head, 1 charger |
| Model Name | 2100 Series |
| Target Audience | Boys, Girls, Unisex-Adults, Unisex-Kids |
| Package Type Name | Box |
| Global Trade Identification Number | 00075020100719 |
| Manufacturer | Philips Sonicare |
| UPC | 075020100719 |
| Manufacturer Part Number | HX3661/04 |
| Model Number | HX3661/04 |
| Best Sellers Rank |
|
| ASIN | B09LD8PTNJ |
| Customer Reviews |
4.4 out of 5 stars |
| Other Special Features of the Product | Brushing Timer, Ergonomic, Rechargeable |
|---|---|
| Power Source | Battery Powered |
| Item Firmness Description | Extra Soft |
| Toothbrush Head Shape | Oval |
| Operation Mode | Automatic |
| Number of settings | 2 |
| Reusability | Reusable |
| Mount Motion | Pulsate |
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Product specifications
Item details
| Brand Name | Philips Sonicare |
|---|---|
| Age Range Description | Adult |
| Included Components | 1 Philips Sonicare 2100 electric toothbrush, 1 SimplyClean (C1) brush head, 1 charger |
| Model Name | 2100 Series |
| Target Audience | Boys, Girls, Unisex-Adults, Unisex-Kids |
| Package Type Name | Box |
| Global Trade Identification Number | 00075020100719 |
| Manufacturer | Philips Sonicare |
| UPC | 075020100719 |
| Manufacturer Part Number | HX3661/04 |
| Model Number | HX3661/04 |
| Best Sellers Rank |
|
| ASIN | B09LD8PTNJ |
| Customer Reviews |
4.4 out of 5 stars |
Features & Specs
| Other Special Features of the Product | Brushing Timer, Ergonomic, Rechargeable |
|---|---|
| Power Source | Battery Powered |
| Item Firmness Description | Extra Soft |
| Toothbrush Head Shape | Oval |
| Operation Mode | Automatic |
| Number of settings | 2 |
| Reusability | Reusable |
| Mount Motion | Pulsate |
Measurements
| Number of Items | 1 |
|---|---|
| Unit Count | 1 Count |
| Number of Pieces | 2 |
| Item Dimensions | 2.48 x 4.29 x 8.66 inches |
| Item Weight | 9.07 ounces |
Materials & Care
| Material Features | Reusable |
|---|---|
| Bristle Material | Nylon |
| Handle Material | Plastic |
Style
| Color | White Mint |
|---|
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Sustainability features for this productSustainability features
This product has sustainability features recognized by trusted certifications.Carbon emissions from the lifecycle of this product were measured, reduced and/or offset.As certified by
GreenCircle Certified: Certified Environmental Facts Label
GreenCircle Certified Environmental Facts (CEF) label certified products have a verified carbon footprint reduction through improvements in the raw materials used to make the product or in the manufacturing operation. The CEF label is a multi-attribute label that highlights sustainability achievements.
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Safety Information
B09LD8PTNJ
Legal Disclaimer
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Product Description
Achieve 200% better plaque removal than with a manual toothbrush thanks to the Philips Sonicare 2100 Series sonic toothbrush paired with the C1 Simply Clean electric toothbrush head. Enjoy a powerful yet gentle clean, even in those hard-to-reach areas. The Advanced Sonic Technology provides gentle yet effective cleaning, pulsing fluid between teeth and along the gumline. To help you get used to the Sonicare experience, the EasyStart feature adjusts the power level of the toothbrush over the first 14 uses. Improve your brushing technique with QuadPacer and reach your recommended brushing time of 2 minutes with SmarTimer. Experience up to 14 days of regular brushing after a single charge, bringing a new level of convenience to your brushing routine (based on two periods of two-minute brushings per day on standard mode). Dental professionals recommend changing brush heads every 3 months. ¹ vs. a manual toothbrush ² based on a study of over 2,600 dental professionals (dentists and hygienists) conducted in the United States, Canada, Japan, China, Korea, Thailand, Germany, the United Kingdom, Switzerland, France, Belgium, Austria, Italy, Spain, Sweden in 2022-2022
From the manufacturer
Philips Sonicare 1100
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Philips Sonicare 2100
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Philips Sonicare 4100
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Philips Sonicare 5100
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Add to Cart
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Add to Cart
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Add to Cart
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Add to Cart
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| Customer Reviews |
4.5 out of 5 stars 9,122
|
4.4 out of 5 stars 4,877
|
4.2 out of 5 stars 20,021
|
4.6 out of 5 stars 27,991
|
| Price | $19.96$19.96 | $29.99$29.99 | $39.96$39.96 | $78.95$78.95 |
| Plaque Removal (vs. Manual Toothbrush) | Helps prevent cavities | 3X Better | 7X Better | 5X Better |
| Brush Head | 1 | 1 | 1 | 1 |
| Brush Head Type | C1 SimplyClean | C1 SimplyClean | C2 Optimal Plaque Control | G2 Optimal Gum Care |
| Modes | 1 | 1 | 1 | 3 |
| Intensities | 1 | 2 | 2 | 1 |
| Pressure Sensor | no data | no data | ✓ | ✓ |
| Smart Timer and QuadPacer | ✓ | ✓ | ✓ | ✓ |
| BrushSync Replacement Reminder | no data | no data | ✓ | ✓ |
| Battery Life | 14 days | 14 days | 14 days | 14 days |
From the brand
-
Shop Rechargeable Toothbrushes
-
Shop Sonicare Brush Heads
-
Shop Water Flossers
Product details
- Product Dimensions : 2.48 x 4.29 x 8.66 inches; 9.07 ounces
- Item model number : HX3661/04
- Batteries : 1 Lithium Ion batteries required. (included)
- Date First Available : December 13, 2021
- Manufacturer : Philips Sonicare
- ASIN : B09LD8PTNJ
- Best Sellers Rank: #21,887 in Health & Household (See Top 100 in Health & Household)
- #55 in Sonic Toothbrushes
- Customer Reviews:
Customer reviews
Customer Reviews, including Product Star Ratings help customers to learn more about the product and decide whether it is the right product for them.
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Reviews with images
Excellent brand and cost. Efficient
Top reviews from the United States
- 5 out of 5 stars
Excellent Electric Toothbrush — Simple, Effective, and Reliable
Reviewed in the United States on September 21, 2025This toothbrush delivers exactly what I was hoping for — powerful cleaning without unnecessary features. It’s easy to use, with a sleek and lightweight design that feels good in the hand. The vibrations are strong enough to give that dentist-clean feeling, and the built-in timer helps ensure a full, even brushing every time. The charging base is compact, and the battery lasts a long time between charges. I also appreciate how quiet it is during use. Replacement heads are simple to swap out, and everything about it just feels well-made. Overall, it’s a solid electric toothbrush that does its job really well — no complaints at all. Highly recommend to anyone switching from manual brushing or looking for a dependable upgrade.
11 people found this helpfulSending feedback...Sending feedback...HelpfulThank you for your feedback.Sorry, we failed to record your vote. Please try againThanks, we'll investigate in the next few days.Sorry, We failed to report this review. Please try again - 5 out of 5 stars
Best deal ever!!!!!!!
Reviewed in the United States on May 7, 2026WOW!!!!!! Great deal !!!!!! Best electric toothbrush & deal of a lifetime!!!!! Not only does this toothbrush work
Perfectly!!! When this arrived I found there was two for the price of one!!!!!
I will remember this if I ever need another one!!!!!! No way could I find this deal anywhere close to home!!!!!
One person found this helpfulSending feedback...Sending feedback...HelpfulThank you for your feedback.Sorry, we failed to record your vote. Please try againThanks, we'll investigate in the next few days.Sorry, We failed to report this review. Please try again - 5 out of 5 stars
Great alternative for a standard toothbrush
Reviewed in the United States on May 13, 2026Works as expected, cleans well!
One person found this helpfulSending feedback...Sending feedback...HelpfulThank you for your feedback.Sorry, we failed to record your vote. Please try againThanks, we'll investigate in the next few days.Sorry, We failed to report this review. Please try again - 4 out of 5 stars
Positive product, durability concern
Reviewed in the United States on May 11, 2026Purchased Sept 2024. As of May 2026, failure of power button. Less then 2 years old and must replace. I like the tooth brush and positive results on my teeth. Needs to be more durable. I refuse to purchase the more expensive versions of the tooth brush due to durability concerns.
Sending feedback...Sending feedback...HelpfulThank you for your feedback.Sorry, we failed to record your vote. Please try againThanks, we'll investigate in the next few days.Sorry, We failed to report this review. Please try again - 5 out of 5 stars
My pockets are empty.
Reviewed in the United States on April 29, 2026Perio people of the world, assemble. I’m happy to report that in addition to quarterly dental deep cleanings that serve to clean out both my pants pockets and gum pockets, my new electric toothbrush saves the day with truly impressive mouth feel results each day.
Comes with simple instructions and the charge lasts forever. Pleasant experience for getting around to finally fighting off gum disease. Thanks!
One person found this helpfulSending feedback...Sending feedback...HelpfulThank you for your feedback.Sorry, we failed to record your vote. Please try againThanks, we'll investigate in the next few days.Sorry, We failed to report this review. Please try again - 5 out of 5 stars
Lasted 1 months and a few days! But Philips are sending a replacement!
Reviewed in the United States on May 23, 2026I have bought these Sonic brushes for years with no problem, they last a year, I'm OK with that! The new last one crapped out at about a year with a really bad on/off switch, the quality is slipping! BUT the one purchased on April 15 2026 is already DEAD!!! the return date was passed by a few days! So what do I do now, cough up for another one ... what???!!!
I did call up Philips and they are going to replace the unit!
Sending feedback...Sending feedback...HelpfulThank you for your feedback.Sorry, we failed to record your vote. Please try againThanks, we'll investigate in the next few days.Sorry, We failed to report this review. Please try again - 1 out of 5 stars
Each of these lasts about three to four months! Planned obsolescence.
Reviewed in the United States on July 17, 2024I thought I'd come by and warn folks about these electric toothbrushes.
See, Sonicare is a very famous brand of dental hygiene products, and the technology used here is proven to be very effective. Rapid gentle motion of a set of soft fibers-- you know. We all get it.
So I've been using Philips Sonicare for many years, and I'm certain that my oral health has benefitted from that.
The trouble is, Philips can't build one of these that lasts more than half a year. I keep having to replace the units because the power switch fails. One after another. The last purchase was 10 April. That's right-- just over three months ago.
The rubbery membrane covering the power switch has cracked open and water has leaked into the switch, and the switch has failed. It either won't come on, or if it does finally come on, I can't then turn it off.
Can you imagine? In the year 2024? Philips can't design and manufacture a power switch on a toothbrush that lasts more than a few months?
Well, of course I know the answer.
It's supposed to fail, and I know it.
It's planned obsolescence, and I know it.
I wanted to let you all know. These are very worthwhile products from the perspective of one's oral health. But the company is ripping you off intentionally.
I'm at this moment going to another brand and I will not buy a Philips product of any kind again. It's a matter of principle to me.
I won't. I refuse to bow down to these greedy and wasteful and arrogant corporations who try to manipulate me into more sales by intentionally manufacturing failure into their products.
They are intentionally trying to arrange for us to develop habitual purchasing of their products, in repetitive cycles, again and again, and they're attempting to teach us to accept miserable quality as inevitable and only customary.
I realize that this has become par for the course, and to many people it doesn't matter-- they're not bothered by constantly buying a new item, over and over and over again.
I really don't care. I'm a discriminating and conscientious and logical person, and I refuse to participate in this kind of idiocy.
60 people found this helpfulSending feedback...Sending feedback...HelpfulThank you for your feedback.Sorry, we failed to record your vote. Please try againThanks, we'll investigate in the next few days.Sorry, We failed to report this review. Please try again - 5 out of 5 stars
Sonic electric toothbrush
Reviewed in the United States on April 25, 2026This is a great electric toothbrush. My dentist says my teeth have never been cleaner! No need to spend the big price on the fancier ones! I love Sonic's reliability and cleaning results.
Sending feedback...Sending feedback...HelpfulThank you for your feedback.Sorry, we failed to record your vote. Please try againThanks, we'll investigate in the next few days.Sorry, We failed to report this review. Please try again
Top reviews from other countries
Vadym Matvieiev2 out of 5 starstoothbrush broke after less than a year of use,
Reviewed in Egypt on October 9, 2025I'm very dissatisfied - the toothbrush broke after less than a year of use, even though all the storage and operating conditions for the toothbrush were met - it just suddenly started buzzing very quietly and had no effect on my teeth.
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mrs maria foster5 out of 5 starsSonic toothbrush
Reviewed in the United Kingdom on March 18, 2026Nice toothbrush like the timer and the small brush
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Nav-Dan AA.5 out of 5 starsGreat starter electric toothbrush for kids
Reviewed in Canada on March 23, 2026We bought this Philips Sonicare 2100 power toothbrush for our daughter and it works really well. It is simple to use and not too strong, which makes it a good option for kids transitioning from a manual toothbrush.
The vibrations are effective but still gentle and it helps clean teeth better than a regular brush. The handle is easy to hold and the overall design feels comfortable for smaller hands. Charging is straightforward and the battery lasts well between uses.
Overall, a reliable and easy to use electric toothbrush that is great for kids. I would recommend it as a good starter option for improving brushing habits.
5 out of 5 starsGreat starter electric toothbrush for kids
Reviewed in Canada on March 23, 2026We bought this Philips Sonicare 2100 power toothbrush for our daughter and it works really well. It is simple to use and not too strong, which makes it a good option for kids transitioning from a manual toothbrush.
The vibrations are effective but still gentle and it helps clean teeth better than a regular brush. The handle is easy to hold and the overall design feels comfortable for smaller hands. Charging is straightforward and the battery lasts well between uses.
Overall, a reliable and easy to use electric toothbrush that is great for kids. I would recommend it as a good starter option for improving brushing habits.
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Roberto5 out of 5 starsExcelente producto
Reviewed in Mexico on August 15, 2024Muy práctico de utilizar
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P. S.C.4 out of 5 starsPhilips
Reviewed in Mexico on July 26, 2023Muy aceptable
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Product Summary: Philips Sonicare 2100 Series Electric Toothbrush - Sonic Toothbrush with Advanced Sonic Technology, Two Intensity Settings, Smartimer & Quadpacer, White, Model HX3661/04
From Philips Sonicare
Price
One-time purchase: $29.99 ( $29.99 / count) 14% Savings
List Price: $34.96
About this Item
- The C1 Simply Clean brush head with soft, flexible bristles removes up to 200% better plaque than a manual toothbrush while protecting your gums
- Electric toothbrush for adults providing gentle yet effective cleaning: the Advanced Sonic Technology pulses fluid between teeth and along the gumline for even more effective oral care
- Optimize your brushing routine: EasyStart for a gradual, gentle increase in brushing power, SmarTimer informing when you've reached 2 minutes, and QuadPacer for better brushing compliance
- Rechargeable toothbrush providing up to 14 days of regular brushing on a full charge
- Philips Sonicare toothbrush from the #1 dental professional recommended sonic toothbrush brand worldwide²: benefit from Philips expertise to keep your teeth and gums in the best condition
- The set includes: 1x Philips Sonicare 2100 Series electric toothbrush, 1x C1 Simply Clean brush head, 1x USB charger (power adaptor not included)
Product Description
Important Information
Safety Information
B09LD8PTNJ
Legal Disclaimer
Statements regarding dietary supplements have not been evaluated by the FDA and are not intended to diagnose, treat, cure, or prevent any disease or health condition.
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