Philips Sonicare 4100 Series Electric Toothbrush – Sonic Toothbrush with Advanced Sonic Technology, Pressure Sensor, Two Intensity Settings, Smartimer & Quadpacer, Black, Model HX3681/24
$39.96
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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 : HX3681/24
Batteries : 1 Lithium Ion batteries required. (included)
Date First Available : December 13, 2021
Manufacturer : Philips Sonicare
ASIN : B09LD7WRVS
Best Sellers Rank: #140 in Health & Household (See Top 100 in Health & Household) #1 in Sonic Toothbrushes
Customer Reviews: 4.4 4.4 out of 5 stars (21,868) var dpAcrHasRegisteredArcLinkClickAction; P.when(‘A’, ‘ready’).execute(function(A) { if (dpAcrHasRegisteredArcLinkClickAction !== true) { dpAcrHasRegisteredArcLinkClickAction = true; A.declarative( ‘acrLink-click-metrics’, ‘click’, { “allowLinkDefault”: true }, function (event) { if (window.ue) { ue.count(“acrLinkClickCount”, (ue.count(“acrLinkClickCount”) || 0) + 1); } } ); } }); P.when(‘A’, ‘cf’).execute(function(A) { A.declarative(‘acrStarsLink-click-metrics’, ‘click’, { “allowLinkDefault” : true }, function(event){ if(window.ue) { ue.count(“acrStarsLinkWithPopoverClickCount”, (ue.count(“acrStarsLinkWithPopoverClickCount”) || 0) + 1); } }); });
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 once it’s time; 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)
11 reviews for Philips Sonicare 4100 Series Electric Toothbrush – Sonic Toothbrush with Advanced Sonic Technology, Pressure Sensor, Two Intensity Settings, Smartimer & Quadpacer, Black, Model HX3681/24
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$39.96
Carissa Mefford –
The “No-Nonsense” Toothbrush
The Bottom LineIf you’re looking for a solid electric toothbrush that just works without a bunch of fancy (and expensive) apps, this Sonicare is a great pick. It’s simple, tough, and gets the job done without breaking the bank.What’s to Like?Serious Power: You can really see the vibration intensity when you get the brush head near water. It’s got plenty of “oomph” to make your teeth feel way cleaner than a regular manual brush.Super Simple: There’s one button. That’s it. You don’t need a manual to figure out how to turn it on or use it.Smart Reminders: Even though it’s basic, it’s smart enough to have little lights at the bottom that tell you when the battery is low or when it’s time to swap out the brush head.Travel-Friendly: The heads snap on and off easily, and they come with these handy little plastic caps to keep the bristles clean in your bag.The Trade-offsBasic Vibes: It doesn’t have different modes (like “whitening” or “sensitive”) or a pressure sensor that beeps at you if you’re pressing too hard.Classic Design: It’s not the quietest thing in the world, but that’s just the trade-off for that high-intensity cleaning power.Final Thought:This is the “Old Reliable” of toothbrushes. It’s got a nice weight to it, feels high-quality in your hand, and focuses on actually cleaning your teeth rather than having a bunch of tech you’ll never use. Definitely worth the buy!
Kim R Langlois –
Excellent toothbrush.
The Philips Sonicare 4100 Series is the only Sonicare toothbrush specifically recommended for its effectiveness and value. Any one that has more bells-and-whistles is personal preference. There is none better functionally.
Z. Bagley –
Using the brand for almost a decade, this model is high quality just like their others!
Purchased two of these as of now, and am very impressed! First was purchased about two years ago when my previous Sonicare finally died after 6 years of use.This is a relatively lightweight toothbrush when compared with other models as well as other brands. The vibration doesn’t skimp, and it’s the perfect minimalist Sonicare! Battery has a solid life, it maintains power, and the replaceable heads are your standard format.Overall, thoroughly impressed! The only downside for this model is if I leave the toothbrush upright the head eventually sticks to the body and prevents it from vibrating – an issues I nor my family has ever had with other models. All it takes is a simply clean of the head or (what I’ve been doing) is laying it down horizontal to dry at night.Highly recommended!
Saurav –
Good value electric toothbrush
Philips Sonicare 4100 is a strong, no‑frills electric toothbrush that delivers an excellent clean with a few quirks buyers should know upfront. It is a good fit if you want effective plaque removal and a pressure sensor without paying for full “smart” connectivity.Pros:- Cleans noticeably better than a manual brush; teeth feel smoother and plaque along the gumline is reduced.- Slim brush head and handle make it easy to reach back molars and tight areas.- Built‑in pressure sensor lowers intensity when brushing too hard, which helps protect gums and enamel.- Two intensity levels are helpful if you have sensitive teeth or are new to sonic brushes.- SmarTimer with 2‑minute timer and 30‑second QuadPacer encourages full‑mouth coverage and consistent brushing time.- Around 14‑day battery life on a full charge with twice‑daily use, so it does not live on the charger.- Compact USB charging base is travel‑friendly and works with common USB power adapters.Cons- On my handle, the pressure sensor feedback and QuadPacer were not clearly active by default, which was disappointing given those are key selling points.- Only one cleaning mode (with two intensity levels), so there are no dedicated whitening or gum‑care programs.- Comes with one brush head, so you will need to buy extras fairly soon, especially if more than one person will share it.- Replacement heads can be pricey over time, raising the long‑term cost of ownership.- No wall adapter included in the box; you must supply your own USB power brick or use an existing USB port.Bottom line- Excellent daily cleaning performance and gum protection features at a mid‑range price.- Best for shoppers who value a simple, effective sonic brush and do not need multiple smart modes or app integration.- In my case, It would be close to perfect if the pressure sensor and quad timer behavior were more obvious and reliably enabled out of the box.
RJ51 –
Love this toothbrush! Part of daily routine.
Love the toothbrush and the price. This seems to keep my teeth healthy and white. It also keeps my gums healthy and the two power level are great. The size is slim and the brush options are great, except the brush heads are costly, in my opinion. Good thing they don’t wear out that quickly and are very durable. It charges quickly.
Susan –
Excellent Performance and Battery Life.
I absolutely love this toothbrush! It works great and has made a noticeable difference in how clean my teeth feel compared to a manual brush. One of the best parts is the battery life—I can easily go a solid two weeks on a single charge, which makes it perfect for travel since I don’t always have to bring the charger. It’s also very easy to clean; the design is sleek and doesn’t have a lot of tiny crevices where toothpaste can build up. They designed it with two intensity settings, so you can easily switch between the two speeds with the click of the button. If you want a reliable electric toothbrush without a bunch of unnecessary features, this is the one to get
Dr VINODKUMAR –
Prevents plaque buildup. Absolutely the best. Buy it if you can afford it. Will save a lot more in dental bills, especially if you have irregular teeth.
wissam hourani –
سهلة الاستخدام ، قوية وفعالة ، خفيفة.
Hend –
يمكن انا ما احب الطنين ولكن ممكن تناسب البعض الفرشاة ممتازة وتنشحن وتبقى فترة طويلة جداً
Antonio Henrique –
Limpa bem
Jen –
Great product