2 year warranty
HX3681/23
HX369W1
Goodbye manual toothbrush. Hello Sonicare.
Sonicare technology combined with our brush action gently removes up to 7x better* plaque than a manual toothbrush.

#1 Dental Professional recommended sonic toothbrush brand worldwide
Sonicare technology
QuadPacer and SmarTimer
Slim ergonomic design
14-day battery life
Sonicare electric toothbrush with advanced sonicare technology is clinically proven to remove up to 7x better* plaque from your teeth and along the gum line while protecting your gums.
Built-in pressure sensor automatically detects pressure you apply, warns you, and reduces the toothbrush vibrations automatically to help protect your gums. The toothbrush will make a pulsing sound as a reminder to ease off the pressure. 7 out of 10 people found this feature helped them become better brushers.
2 minute SmarTimer and 30-second QuadPacer guide you to brush for the recommended time in all areas of your mouth to ensure a complete clean.
4.3
of 5
3069
Reviews
86%
recommend this product
ChrisfromPA
30/09/2026
US
Part of promotion
Verified buyer
Repeat customer
I appreciate my Sonic. My hygienist says I don't need all of the fancy features on the more expensive models, plus my last button on my Sonic handled two years of use, so more buttons and features aren't what I am looking for. I went to my dentist yesterday and he said that whatever I am doing for mouth health I should continue doing. I have been using Sonic electric toothbrushes for twenty years.
This review was made for 4100 Series HX3681/23 Sonic electric toothbrush
Date of Use 2026-06-21
This review was made for 4100 Series HX3681/23 Sonic electric toothbrush
Date of Use 2026-06-21
SmileyJack
29/09/2026
US
Part of promotion
Verified buyer
WORKS PERFECTLY - TEETH AND GUMS FEEL CLEANER
This is the third Norelco Sonic toothbrush I have owend. After many years of good service, the other two batteries finally wore out. The 4100 series is, of course, an advanced version of the ones I used befrore and has been performing even better. I am very pleased with this purchase and expect better dental reports as it has been over 5 years since the previous one finally would not accept a battery charge - the batteries are not replaceable (sealed). While the Owner's Manual states that you can leave the brush on the charger, I had done that with the first two and I think that is why the batteries eventually built up a resistance to continued charging. This one is allowed to sit on the counter (flat bottom is stable and the brush air dries). On the first charge, I got 3 weeks of daily use before it indicated a need for a recharge.
Yes, I recommend this product
This review was made for 4100 Series HX3681/23 Sonic electric toothbrush
Date of Use 2026-07-29
Yes, I recommend this product
This review was made for 4100 Series HX3681/23 Sonic electric toothbrush
Date of Use 2026-07-29
All taken
25/09/2026
US
Part of promotion
Verified buyer
It’s a great product I have tried the other brands this one vibrates at a sonic speed, it’s slim, it has no ridges on the handle that traps toothpaste and crud, and the battery last almost a week without having to constantly put back on the charger
This review was made for 4100 Series HX3681/24 Sonic electric toothbrush
Date of Use 2026-08-01
This review was made for 4100 Series HX3681/24 Sonic electric toothbrush
Date of Use 2026-08-01
vs manual toothbrush for healthier teeth and gums
Data on file
based on two periods of two-minute brushings per day on standard mode