2 year warranty
Discontinued
Philips Sonicare 4100 SeriesSonic electric toothbrush
HX3681/28
HX369FG
#1 Dental Professional recommended sonic toothbrush brand worldwide
Up to 7X better plaque removal*
Goodbye manual toothbrush. Hello Sonicare.
Sonicare technology
QuadPacer and SmarTimer
Slim ergonomic design
14-day battery life
Up to 7x better plaque removal vs a manual toothbrush*
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.
Pressure Sensor helps protect your teeth and 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.
Optimize your brushing with SmarTimer and QuadPacer
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.
Technical Specifications
Reviews
4.3
of 5
3034
Reviews
86%
recommend this product
Liz 505
24/07/2026
US
Part of promotion
Verified buyer
Simple and effective
Lightweight and very effective. I finally was unable to repair my 27 year old Oral B. Consumer Reports rated this toothbrush as a great buy. So I did.
Pros
Simple, lightweight, doesn't need to "surf the web".
Cons
USB power plug. Why?
Yes, I recommend this product
This review was made for 4100 Series HX3681/23 Sonic electric toothbrush
Date of Use 2026-06-29
Yes, I recommend this product
This review was made for 4100 Series HX3681/23 Sonic electric toothbrush
Date of Use 2026-06-29
Springer13
23/07/2026
US
Part of promotion
Verified buyer
My dental hygienist suggested I purchase one so I did. Once you master how to use it it is quite effective and easy to use. You must resist being aggressive with it.
Pros
Simple to use and does the job.
Cons
Overcoming the paradigm shift after you've used an electric toothbrush for decades.
Yes, I recommend this product
This review was made for 4100 Series HX3681/24 Sonic electric toothbrush
Date of Use 2026-06-15
Yes, I recommend this product
This review was made for 4100 Series HX3681/24 Sonic electric toothbrush
Date of Use 2026-06-15
21/07/2026
US
Part of promotion
Verified buyer
It gets my teeth cleaner. Is relatively easy to use.
This review was made for 4100 Series HX3681/24 Sonic electric toothbrush
Date of Use 2026-07-21
This review was made for 4100 Series HX3681/24 Sonic electric toothbrush
Date of Use 2026-07-21
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vs manual toothbrush for healthier teeth and gums
Data on file
based on two periods of two-minute brushings per day on standard mode