---
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: "618 kr"
currency: DKK
in_stock: true
reviews_count: 8
url: https://www.desertcart.dk/products/404099178-4100-series-electric-toothbrush-sonic-toothbrush-with-advanced-sonic-technology
store_origin: DK
region: Denmark
---

# 14-day battery life 700% better plaque removal 2-min SmartTimer & QuadPacer 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:** 618 kr
**Availability:** ✅ In Stock

## Summary

> 🦷 Elevate your smile game with pro-level clean power at your fingertips!

## 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?** 618 kr with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.dk](https://www.desertcart.dk/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

- • **Charge less, smile more.:** Up to 14 days of powerful brushing on a single USB charge—travel-ready and hassle-free.
- • **Plaque? Consider it gone.:** Removes up to 700% more plaque than manual brushes for that dentist-clean confidence.
- • **Power that adapts to you.:** EasyStart gradually boosts brushing power so your mouth adjusts smoothly without shock.
- • **Smart timing, perfect routine.:** Built-in SmarTimer and QuadPacer ensure you hit the dentist-recommended 2 minutes with even coverage.
- • **Pressure sensor = gum guardian.:** Handle pulses to warn you if you brush too hard, protecting your gums effortlessly.

## Overview

The Philips Sonicare 4100 is a rechargeable electric toothbrush designed for adults, featuring Advanced Sonic Technology that removes up to 700% more plaque than manual brushing. It includes a pressure sensor to protect gums, a SmartTimer and QuadPacer for optimal brushing time and coverage, and offers up to 14 days of battery life per charge. The C2 Optimal Plaque brush head with soft, flexible bristles whitens and polishes teeth gently yet effectively, making it 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: My Teeth Have Never Felt So Clean — It’s Like a Car Wash for Your Mouth - This toothbrush?? A POWER TOOL. The first time I used it, my mouth was like, “Wow okay, we’re doing professional-level cleaning at home now.” First Impressions Lightweight, sleek, simple — not one of those overly complicated toothbrushes with 47 modes you’ll never use. Just one button. One mission. Make your teeth SHINE. Using It The vibration?? STRONG. Like “I didn’t know my teeth could feel THIS clean” strong. My gums were like: “Ma’am… what is this level of attention??” After the first brush: • My teeth felt smooth • My breath felt fresher • My mouth felt like it had a college degree It has a built-in timer so you stop rushing and actually brush for the dentist-recommended two minutes instead of your usual 17 seconds. Why It SLAPS • Cleans between teeth like it’s trying to expose secrets • Removes plaque like it owes you money • Still gentle on gums • Quiet enough that I don’t sound like I’m starting a lawn mower at 7AM And the vibration pattern is chef’s kiss. It pauses every 30 seconds to tell you to move to the next quadrant — which is helpful because I absolutely forget how time works. Pros • SUPER clean feeling • Easy to charge • Lightweight • Great battery life • Doesn’t have unnecessary features • Dentist-level clean at home Cons • The first time you use it, your brain might rattle slightly (you adjust fast) • It will absolutely expose how badly you used to brush Final Verdict If you want clean, smooth, dentist-approved teeth without paying $150+ for a fancy model — get this. Affordable, powerful, simple, and effective. My mouth has never felt cleaner and my dentist is going to think I got my life together.
Review: Smooth, Even Clean with Smart Features - After 14 years with my Oral‑B Pro 100, I decided to switch to the Philips Sonicare 4100 Rechargeable Electric Toothbrush (Model HX3681/24) when my old brush finally gave out. I’m glad I did—the Sonicare makes the surface of my teeth feel noticeably smoother and cleaner than my Oral‑B ever did. The sensation was a little strange at first, but I appreciate that the intensity gradually increases over time, which helped me adjust quickly. I also love the SmarTimer and QuadPacer features. Both brushes had 2‑minute timers, but Sonicare’s 30‑second intervals ensure I give equal attention to every section of my mouth. With my Oral‑B, I tended to spend more time on certain areas, so this is a big improvement. The lithium battery is another plus—I don’t have to swap it out nearly as often as I did with my old brush. Time will tell if it lasts as long as my Oral‑B did, but so far, I’m very impressed. Overall, this toothbrush is sleek, effective, and thoughtfully designed. Highly recommend!

## 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 | #305 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 | 4.3 out of 5 stars 53,026 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 |
| Material Features | Rechargeable |
| Model Name | 4100 Series |
| 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 |
| 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)

## 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

### ⭐⭐⭐⭐⭐ My Teeth Have Never Felt So Clean — It’s Like a Car Wash for Your Mouth
*by R***N on November 22, 2025*

This toothbrush?? A POWER TOOL. The first time I used it, my mouth was like, “Wow okay, we’re doing professional-level cleaning at home now.” First Impressions Lightweight, sleek, simple — not one of those overly complicated toothbrushes with 47 modes you’ll never use. Just one button. One mission. Make your teeth SHINE. Using It The vibration?? STRONG. Like “I didn’t know my teeth could feel THIS clean” strong. My gums were like: “Ma’am… what is this level of attention??” After the first brush: • My teeth felt smooth • My breath felt fresher • My mouth felt like it had a college degree It has a built-in timer so you stop rushing and actually brush for the dentist-recommended two minutes instead of your usual 17 seconds. Why It SLAPS • Cleans between teeth like it’s trying to expose secrets • Removes plaque like it owes you money • Still gentle on gums • Quiet enough that I don’t sound like I’m starting a lawn mower at 7AM And the vibration pattern is chef’s kiss. It pauses every 30 seconds to tell you to move to the next quadrant — which is helpful because I absolutely forget how time works. Pros • SUPER clean feeling • Easy to charge • Lightweight • Great battery life • Doesn’t have unnecessary features • Dentist-level clean at home Cons • The first time you use it, your brain might rattle slightly (you adjust fast) • It will absolutely expose how badly you used to brush Final Verdict If you want clean, smooth, dentist-approved teeth without paying $150+ for a fancy model — get this. Affordable, powerful, simple, and effective. My mouth has never felt cleaner and my dentist is going to think I got my life together.

### ⭐⭐⭐⭐⭐ Smooth, Even Clean with Smart Features
*by S***E on December 3, 2025*

After 14 years with my Oral‑B Pro 100, I decided to switch to the Philips Sonicare 4100 Rechargeable Electric Toothbrush (Model HX3681/24) when my old brush finally gave out. I’m glad I did—the Sonicare makes the surface of my teeth feel noticeably smoother and cleaner than my Oral‑B ever did. The sensation was a little strange at first, but I appreciate that the intensity gradually increases over time, which helped me adjust quickly. I also love the SmarTimer and QuadPacer features. Both brushes had 2‑minute timers, but Sonicare’s 30‑second intervals ensure I give equal attention to every section of my mouth. With my Oral‑B, I tended to spend more time on certain areas, so this is a big improvement. The lithium battery is another plus—I don’t have to swap it out nearly as often as I did with my old brush. Time will tell if it lasts as long as my Oral‑B did, but so far, I’m very impressed. Overall, this toothbrush is sleek, effective, and thoughtfully designed. Highly recommend!

### ⭐⭐⭐⭐⭐ Excellent performance, but would love more color variety!
*by R***S on January 15, 2026*

I am so impressed with the Philips Sonicare 4100 Series. I purchased the Deep Pink and Light Pink versions, and they look great in the bathroom. The advanced sonic technology leaves my teeth feeling incredibly clean, and the pressure sensor is a great feature to ensure I’m not brushing too hard. My only wish is that this series came in a wider range of colors. It would be so helpful if there were options like lavender, purple, green, orange, or yellow so that every family member could have their own distinct color to avoid any mix-ups. Aside from the color limitation, it’s a fantastic toothbrush that I highly recommend!

## 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

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*Product available on Desertcart Denmark*
*Store origin: DK*
*Last updated: 2026-02-06*