1 / 7Philips Sonicare 3100 HX4021/02 Rechargeable Electric Toothbrush
HX4021: Philips Sonicare 3100 is a rechargeable sonic electric toothbrush for adults, with two intensity choices, brushing prompts and an included i InterCare brush head. Its listing describes a battery life of up to 14 days under regular-use conditions, while the charger is listed without a power adaptor.
At a glance
- Two intensity levels, Medium and Low, offer a choice of brushing feel.
- QuadPacer prompts a change of area every 30 seconds, while SmartTimer signals the end of a 2-minute session.
- EasyStart gradually increases brushing power over the first 14 cleans, according to the listing.
- The stated battery life of up to 14 days applies to regular brushing. The detailed description specifies two 2-minute sessions per day on standard mode.
Reference price: $42.99
Price checked: Nov 13, 2026
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Pros and cons
Pros
- The 30-second pacing prompts and 2-minute timer provide structure without requiring a separate timer.
- Medium and Low settings and gradual EasyStart may help people moving from manual brushing adjust their routine.
- The listed kit includes an i InterCare brush head and charger.
Cons
- A power adaptor is not included, so buyers may need a compatible adaptor to use the charger.
Technical specifications
15 specifications| Brand | Philips Sonicare |
|---|---|
| Model | HX4021/02 |
| Age range | Adult |
| Target audience | Unisex-Adults |
| Special features | Brushing Timer, Pressure Sensor, Rechargeable, Sonic |
|---|---|
| Settings | 2 |
| Intensity choices | Medium and Low intensity settings |
| Operation mode | Automatic |
| Bristle movements | 31,000 bristle movements |
| Mount motion | Vibrate |
| Item firmness | Medium |
| Power configuration | Battery Powered |
|---|---|
| Battery life claim | up to 14 days of regular brushing after one full charge |
| Parcel dimensions and weight | 21.8 x 10.8 x 5.4 cm; 280 g |
|---|---|
| Country of origin | China |
What to know before buying
Listing details to confirm
The listing states up to 300% better plaque removal versus a manual toothbrush, but this is a manufacturer comparison rather than an independently verified result. Battery-life wording gives up to 14 days and specifies two 2-minute sessions per day on standard mode. The package description names a charger and says its power adaptor is not included, while a separate battery detail says a nonstandard battery is included. Confirm the charging setup for the selected listing.
Who is it for?
A good fit for
- Adults looking for a rechargeable sonic toothbrush with a choice of two intensities.
- People who want prompts to divide brushing into four areas and keep to a 2-minute session.
- Users transitioning from a manual toothbrush who may appreciate gradual power increase.
Less suited to
- Buyers who need a power adaptor included in the package.
- People seeking several brush modes or a travel case, neither of which is specified for this product.
Customer reviews on Amazon
- 5 stars
79% 79% - 4 stars
21% 21% - 3 stars
0% 0% - 2 stars
0% 0% - 1 star
0% 0%
Only aggregate rating information is supplied, with ratings concentrated in the four- and five-star categories. This is a small sample and does not explain why customers rated the toothbrush as they did. It offers limited insight into practical experiences with the two intensity levels, pacing prompts or charging setup.
Frequently asked questions
What comes with the Philips Sonicare 3100?
The listed set includes the toothbrush, one i InterCare brush head and one charger. The description says the power adaptor is not included.
How long does the battery last?
The listing claims up to 14 days of regular brushing after a full charge. Its detailed description bases this on two 2-minute sessions per day on standard mode.
What brushing settings does it have?
The listing specifies Medium and Low intensity settings.
Does it have a brushing timer?
Yes. The listing describes QuadPacer prompts every 30 seconds and a SmartTimer that indicates when a 2-minute session is complete.
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