--- product_id: 404099178 title: "4100 Series Electric Toothbrush - Sonic Toothbrush with Advanced Sonic Technology, Pressure Sensor, Two Intensity Settings, Smartimer & Quadpacer, Black, Model HX3681/24" brand: "philips sonicare" price: "₩119256" currency: KRW in_stock: true reviews_count: 13 category: "Philips Sonicare" url: https://www.desertcart.kr/products/404099178-4100-series-electric-toothbrush-sonic-toothbrush-with-advanced-sonic-technology store_origin: KR region: South Korea --- # 14-day battery life 2 intensity settings 700% better plaque removal 4100 Series Electric Toothbrush - Sonic Toothbrush with Advanced Sonic Technology, Pressure Sensor, Two Intensity Settings, Smartimer & Quadpacer, Black, Model HX3681/24 **Brand:** philips sonicare **Price:** ₩119256 **Availability:** ✅ In Stock ## Summary > 🦷 Elevate your smile game with tech that cares as much as you do! ## Quick Answers - **What is this?** 4100 Series Electric Toothbrush - Sonic Toothbrush with Advanced Sonic Technology, Pressure Sensor, Two Intensity Settings, Smartimer & Quadpacer, Black, Model HX3681/24 by philips sonicare - **How much does it cost?** ₩119256 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.kr](https://www.desertcart.kr/products/404099178-4100-series-electric-toothbrush-sonic-toothbrush-with-advanced-sonic-technology) ## Best For - philips sonicare enthusiasts ## Why This Product - Trusted philips sonicare brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Precision Timing:** QuadPacer and Smartimer ensure you hit the dentist-recommended 2-minute, even brushing routine. - • **Long-Lasting Charge:** Up to 14 days of cordless brushing freedom on a single USB charge—travel-ready and hassle-free. - • **Smart Pressure Sensor:** Protect your gums with real-time feedback that stops over-brushing before damage starts. - • **Next-Level Clean Power:** Advanced Sonic Technology pulses fluid for deep, gentle cleaning beyond the surface. - • **Brush Head Intelligence:** Replacement reminders track wear and brushing habits, so you never miss optimal performance. ## Overview The Philips Sonicare 4100 Series electric toothbrush combines advanced sonic technology with smart features like a pressure sensor, two intensity settings, and a 2-minute timer to deliver up to 700% better plaque removal than manual brushing. Its rechargeable battery lasts up to 14 days, while brush head replacement reminders ensure optimal oral hygiene. Designed for adults seeking a professional-level clean with gentle care, this sleek black model is the #1 dental professional recommended sonic toothbrush worldwide. ## 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 Review: The "No-Nonsense" Toothbrush - ​The Bottom Line ​If 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-offs ​Basic 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! Review: 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. ## 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 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) ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B09LD7WRVS | | Age Range (Description) | Adult | | Age Range Description | Adult | | Best Sellers Rank | #112 in Health & Household ( See Top 100 in Health & Household ) #1 in Sonic Toothbrushes | | Brand | Philips Sonicare | | Brand Name | Philips Sonicare | | Bristle Material | Nylon | | Color | Black | | Customer Reviews | 4.4 out of 5 stars 21,837 Reviews | | Global Trade Identification Number | 00075020100764 | | Handle Material | Plastic | | Included Components | 1 Philips Sonicare 4100 handle, 1 Optimal Plaque Control (C2) brush head, 1 charger | | Item Dimensions | 2.48 x 4.29 x 8.66 inches | | Item Firmness Description | Soft | | Item Weight | 0.54 Pounds | | Manufacturer | Philips Sonicare | | Manufacturer Part Number | HX3681/24 | | Material Features | Rechargeable | | Model Name | 4100 Series | | Model Number | HX3681/24 | | Mount Motion | Pulsate | | Number of Items | 1 | | Number of Pieces | 1 | | Number of settings | 2 | | Operation Mode | Electric | | Other Special Features of the Product | Pressure Sensor,Brushing Timer,Rechargeable,Lightweight,Ergonomic | | Package Type Name | Box | | Power Source | Battery Powered | | Reusability | Reusable | | Special Feature | Pressure Sensor,Brushing Timer,Rechargeable,Lightweight,Ergonomic | | Target Audience | Boys, Girls, Unisex-Adults, Unisex-Kids | | Toothbrush Head Shape | Round | | UPC | 075020100764 | | Unit Count | 1 Count | ## Product Details - **Age Range (Description):** Adult - **Brand:** Philips Sonicare - **Item Firmness Description:** Soft - **Power Source:** Battery Powered - **Special Feature:** Pressure Sensor,Brushing Timer,Rechargeable,Lightweight,Ergonomic ## Images ![4100 Series Electric Toothbrush - Sonic Toothbrush with Advanced Sonic Technology, Pressure Sensor, Two Intensity Settings, Smartimer & Quadpacer, Black, Model HX3681/24 - Image 1](https://m.media-amazon.com/images/I/71Nuz9Sjl1L.jpg) ![4100 Series Electric Toothbrush - Sonic Toothbrush with Advanced Sonic Technology, Pressure Sensor, Two Intensity Settings, Smartimer & Quadpacer, Black, Model HX3681/24 - Image 2](https://m.media-amazon.com/images/I/71dC6zR6FAL.jpg) ![4100 Series Electric Toothbrush - Sonic Toothbrush with Advanced Sonic Technology, Pressure Sensor, Two Intensity Settings, Smartimer & Quadpacer, Black, Model HX3681/24 - Image 3](https://m.media-amazon.com/images/I/711sslP6htL.jpg) ![4100 Series Electric Toothbrush - Sonic Toothbrush with Advanced Sonic Technology, Pressure Sensor, Two Intensity Settings, Smartimer & Quadpacer, Black, Model HX3681/24 - Image 4](https://m.media-amazon.com/images/I/715Ti5t1oGL.jpg) ![4100 Series Electric Toothbrush - Sonic Toothbrush with Advanced Sonic Technology, Pressure Sensor, Two Intensity Settings, Smartimer & Quadpacer, Black, Model HX3681/24 - Image 5](https://m.media-amazon.com/images/I/71noaPc3SLL.jpg) ## Available Options This product comes in different **Color, Size** options. ## Questions & Answers **Q: Why doesn't the new 4100 model have a regular plug ? why on gods green earth did they cheap out and put a usb plug in there ??** A: According to the review in WireCutter (Sept 2022), you can contact SonicCare and receive a free plug adapter. I've just ordered the 4100 on Amazon. I don't have the serial number yet, because the product doesn't arrive until tomorrow, but SonicCare customer service just told me that they would send the free plug adapter once I provide the model number and serial number to them. They confirmed there is no charnge. It will take 7-10 days to receive the plug adapter once I am able to provide them with the serial number. I'll do all of that after the product arrives tomorrow. **Q: Does anybody make a single speed electric toothbrush? I'm so tired of cycling through the speeds** A: Cycling is the most effective way to brush each quadrant sufficiently. **Q: What is the purpose of having two intensity modes? How do you know when you should use one or the other?** A: if you have more sensitive teeth and gums you can use the softer mode **Q: What do the green and yellow lights mean? what about the beeping noise after the 2 minute brush? I thought low battery but is it replacement head?** A: Hi! When the brush head replacement reminder light of Philips Sonicare Toothbrush HX3681/24 lights up amber, kindly replace your brush head. ## Customer Reviews ### ⭐⭐⭐⭐⭐ The "No-Nonsense" Toothbrush *by C***D on April 17, 2026* ​The Bottom Line ​If 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-offs ​Basic 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! ### ⭐⭐⭐⭐⭐ Excellent toothbrush. *by K***S on April 16, 2026* 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. ### ⭐⭐⭐⭐⭐ Using the brand for almost a decade, this model is high quality just like their others! *by Z***Y on May 1, 2026* 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! ## Frequently Bought Together - Philips Sonicare 4100 Rechargeable Electric Toothbrush, with Pressure Sensor, 2 Intensity Settings, SmarTimer and QuadPacer, 14-Day Battery Life, Black, Model HX3681/24 - Toothbrush Replacement Brush Heads for Philips Sonicare C1 C2 ProtectiveClean 4100 5100, Electric Sonic Tooth Refill Head Plaque Control, 10 Pack, Black - BrightDeal Replacement Heads for Philips Sonicare ProtectiveClean 4100 5100 6100 DiamondClean 9500 ExpertClean 7500 FlexCare HealthyWhite Electric Sonic Toothbrush C3 G3 W3 C2 G2 Brush, White, 6 Pack --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.kr/products/404099178-4100-series-electric-toothbrush-sonic-toothbrush-with-advanced-sonic-technology](https://www.desertcart.kr/products/404099178-4100-series-electric-toothbrush-sonic-toothbrush-with-advanced-sonic-technology) --- *Product available on Desertcart South Korea* *Store origin: KR* *Last updated: 2026-05-13*