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Philips Sonicare 4100 Series Electric Toothbrush - Sonic Toothbrush with Advanced Sonic Technology, Pressure Sensor, Two Intensity Settings, Smartimer & Quadpacer, Deep Pink, Model HX3681/26

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Availability: Only 3 left in stock, order soon!
Fulfilled by Amazon

Arrives Wednesday, Aug 26
Order within 5 hours and 48 minutes
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Size: 1 Count (Pack of 1)


Color: Deep Pink


Features

  • The C2 Optimal Plaque brush head with soft, flexible, stain-removal bristles helps whiten and polish your teeth; it also removes up to 700% better plaque than a manual toothbrush
  • 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
  • Safe and gentle electric toothbrush with pressure sensor: if you apply too much pressure, the handle will pulse slightly, reminding you to ease off the pressure, protecting your teeth and gums
  • Optimize your routine: EasyStart for a gradual, gentle increase in brushing power, SmarTimer informing when you've reached 2 minutes, and QuadPacer to brush each section of a mouth for 30 seconds
  • Brush head replacement reminder tracks how often and how hard you brush, then notifies you when it's time to replace the brush head; dental professionals recommend changing your brush head regularly
  • 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 4100 Series electric toothbrush, 1x C2 Optimal Plaque brush head, 1x USB charger (power adaptor not included)

Description

Achieve 700% better plaque removal than with a manual toothbrush thanks to the Philips Sonicare 4100 Series sonic toothbrush paired with the C2 Optimal Plaque 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. With the built-in pressure sensor, you know when to adjust the pressure. Ease off and your gums will stay protected! 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). Did you know that brush heads become less effective after three months? The replacement reminder tracks how often and how hard you brush, then reminds you to replace your brush head once it's time for a new one. 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 2022-2023

Product Dimensions ‏ : ‎ 2.48 x 4.29 x 8.66 inches; 8.64 ounces


Item model number ‏ : ‎ HX3681/26


Batteries ‏ : ‎ 1 Lithium Ion batteries required. (included)


Date First Available ‏ : ‎ December 13, 2021


Manufacturer ‏ : ‎ Philips Sonicare


Best Sellers Rank: #203 in Health & Household (See Top 100 in Health & Household) #1 in Sonic Toothbrushes


#1 in Sonic Toothbrushes:


Customer Reviews: 4.4 4.4 out of 5 stars (14,191)


Brand Name: Philips Sonicare


Age Range Description: Adult


Included Components: 1 Philips Sonicare 4100 handle, 1 Optimal Plaque Control (C2) brush head, 1 charger


Model Name: 4100 Series


Target Audience: Unisex-Adults


Package Type Name: Box


Global Trade Identification Number: 71


Manufacturer: Philips Sonicare


UPC: 075020100771


Manufacturer Part Number: HX3681/26


Model Number: HX3681/26


Other Special Features of the Product: Pressure Sensor,Brushing Timer,Rechargeable,Lightweight,Ergonomic


Power Source: Battery Powered


Item Firmness Description: Soft


Toothbrush Head Shape: Round


Operation Mode: Automatic


Number of settings: 2


Reusability: Reusable


Mount Motion: Vibrate


Number of Items: 1


Unit Count: 1 Count


Number of Pieces: 1


Item Dimensions: 2.48 x 4.29 x 8.66 inches


Item Weight: 8.64 ounces


Material Features: Reusable


Bristle Material: Nylon


Handle Material: Plastic


Color: Deep Pink


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Wednesday, Aug 26

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

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Top Amazon Reviews


  • Best Electic Toothbrush You Can Get
Size: 1 Count (Pack of 1) Color: Deep Pink
My dentist told me that I needed to switch to an electric toothbrush so I found the specs and review to this one to be good. The brush head isn't too small like the other ones I saw, and it has two power speeds. It may be uncomfortable to use on your teeth at first if you switch from a manual toothbrush. But let me tell you, that your teeth will get so much used to it and after a while, it won't even bother you. I find that my teeth are just as clean as if coming from a dentist's office. My teeth feel so smooth and I can tell that it has gotten rid of any plaque or bacteria I may have. I have permanent retainers on the bottom of my teeth which can be a pain to clean and floss. But with this electric toothbrush, I can tell that it's cleaner than it has ever been as I glide my tongue around the area. I just visited the dentist and the hygienist was going about how clean my teeth are and how well I take care of them! And how I have absolutely no plaque, and I am doing the right things, and that I should keep doing what I'm doing. I was using a battery-powered brush that was cheap from Walmart but having to replace the batteries is a hassle. The fact that this is rechargeable and the change holds for a VERY long time is what I think is the best thing about this toothbrush. It may not come with a wall adapter, but you can contact Sonicare and they can send one in for you to use. Their idea is to conserve the environment by doing so which is fine by me. I just used a wall charger I've had and it does the job. If you're on the fence about buying this one, or any electric toothbrush-don't be. Its the best investment you can make for yourself and your oral health and I have not looked back on buying this. 10/10 recommend. ... show more
Reviewed in the United States on October 20, 2023 by Megan

  • great!
Size: 1 Count (Pack of 1) Color: Deep Pink
My boyfriend and I love these! They are very nice quality and make your teeth feel extra clean. They are also super sleek and nice. Easy to charge as well and also easy to travel with! I definitely notice a difference
Reviewed in the United States on June 30, 2026 by kay

  • IT IS A GREAT TOOTHBRUSH
Size: 1 Count (Pack of 1) Color: Deep Pink
IT REMINDS YOU AFTER 30 SECONDS TO GO TO A DIFFERENT QUADRANT AND AFTER 2 MINUTES TURNS OFF.
Reviewed in the United States on May 16, 2026 by lbh

  • Kids actually Use It! Great purchase/buy.
Size: 1 Count (Pack of 1) Color: Deep Pink
I bought two of these Philips Sonicare 4100 toothbrushes—one for my nephew and one for my niece—after their older electric toothbrushes finally stopped working. Honestly, I wasn’t sure how much of a difference they’d notice, but it’s been a huge upgrade. They both love them and are actually brushing two to three times a day now without being reminded, which says a lot. The brushes are simple to use, gentle but still feel like they’re doing a really good job cleaning. I’ve noticed they mention their teeth feel “super clean” after using them, and that’s exactly what you want, especially for kids building good habits early. These brushes are known for being effective at removing plaque while still being gentle on gums, which makes them a great choice for daily use. Overall, great value and a really solid upgrade from their older brushes. Definitely recommend if you’re looking for something reliable that actually gets used! ... show more
Reviewed in the United States on June 29, 2026 by Kevin Anzo

  • Small But Mighty Small But Mighty
Size: 1 Count (Pack of 1) Color: Deep Pink
I have very sensitive gums and some gum loss, so this toothbrush has been amazing. It alerts me when I’m brushing too hard or getting too close to my gum line, which helps protect my gums. I also love the built-in timer that keeps me brushing for the right amount of time. Gentle, effective, and highly recommended! 🩷🪥 ... show more
Reviewed in the United States on May 31, 2026 Reviewed in the United States on May 31, 2026 by Amazon Customer

  • 100% recommend.
Size: 1 Count (Pack of 1) Color: Deep Pink
Have two now because the first one wouldn't charge with my charger. User error and charger's fault, not this item. Have the second in my travel case
Reviewed in the United States on June 22, 2026 by Ginger Hanson

  • Laugh while you brush
Size: 1 Count (Pack of 1) Color: Deep Pink
It took me a while to figure out how to NOT tickle my mouth with this brush. Seriously. I've had it for about 2 years and bought extra heads to go with it. This brush is a rock star when it comes to cleaning the hard to get to spaces. The small head protects the gum line from over brushing. The charge is quick and lasts a long time. Turn on the brush, scrub away, and when it stops you're all done. I like that! I've had no problems with this Sonic Electric Toothbrush and when this one fizzles out I'm buying another one. No sign of fizzling yet. ... show more
Reviewed in the United States on May 30, 2026 by Fran

  • Works incredibly well, but the brush head is smaller than normal
Size: 1 Count (Pack of 1) Color: Deep Pink
I really like this toothbrush, the sonic technology leaves my teeth feeling exceptionally clean, almost like a professional dental cleaning. The pressure sensor is a great feature to prevent brushing too hard, and the overall battery life is excellent. The only thing to note is that the included brush head is a bit smaller than normal manual toothbrushes or older electric models. It takes a little getting used to because it covers less area at once, but it actually makes it much easier to reach the back teeth and tight spots. Overall, it's a fantastic, high-quality toothbrush! ... show more
Reviewed in the United States on June 30, 2026 by Eddie Franco

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