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 ??

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.

Does anybody make a single speed electric toothbrush? I'm so tired of cycling through the speeds

Cycling is the most effective way to brush each quadrant sufficiently.

What is the purpose of having two intensity modes? How do you know when you should use one or the other?

if you have more sensitive teeth and gums you can use the softer mode

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?

Hi! When the brush head replacement reminder light of Philips Sonicare Toothbrush HX3681/24 lights up amber, kindly replace your brush head.

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Philips Sonicare 4100 Series Electric Toothbrush - Sonic Toothbrush with Advanced Sonic Technology, Pressure Sensor, Two Intensity Settings, Smartimer & Quadpacer, Black, Model HX3681/24

Philips Sonicare 4100 Series Electric Toothbrush - Sonic Toothbrush with Advanced Sonic Technology, Pressure Sensor, Two Intensity Settings, Smartimer & Quadpacer, Black, Model HX3681/24

Product ID: 404099178

Details

Age Range (Description)
Adult
Brand
Philips
Item Firmness Description
Soft
Power Source
Battery
Special Feature
Pressure Timer

⚡14-day battery life

📏2 intensity settings

🦷700% better plaque removal

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2077675₫

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In stock

Sold byAmazon VietnamDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Details

Age Range (Description)
Adult
Brand
Philips
Item Firmness Description
Soft

Description

🦷 Elevate your smile game with tech that cares as much as you do!

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.

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.

Specifications

ASIN	B09LD7WRVS
Age Range (Description)	Adult
Age Range Description	Adult
Best Sellers Rank	#110 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 21,783 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

Reviews

C**D

17.04.2026

K**S

16.04.2026

Z**Y

1.05.2026

S**V

30.11.2025

R**1

4.04.2026

S**N

4.03.2026

I**D

22.06.2025

F**1

1.04.2026

D**R

12.04.2026

W**I

4.11.2025

H**D

3.05.2025

J**N

1.04.2026

C**T

25.02.2026

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