Philips Sonicare 2100 Series Electric Toothbrush HX4021/01

Electric: The Philips Sonicare 2100 Series HX4021/01 is a rechargeable sonic toothbrush with two intensity settings, a gradual-start feature and timed brushing prompts. Its listed 14-day battery life is based on regular brushing, while an inconsistency between the model name and stated included toothbrush series means the selected listing’s bundle is worth checking.

At a glance

Choose between Medium and Low intensity, with EasyStart gradually increasing brushing power over the first 14 cleans.
BrushPacer prompts a change of area every 30 seconds, and SmarTimer indicates when a two-minute session is complete.
The listing claims up to 14 days of regular brushing per full charge. The description specifies standard mode and two minutes of brushing twice daily.
The manufacturer claims 31,000 bristle movements and up to three times more plaque removal than a manual toothbrush with the Intercare head. These are product claims, not independent measurements.

Price

£26.99Save 55%

Reference price: ~~£59.99~~

Price checked: 14 Nov 2026

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Often bought together

Philips Sonicare 2100 Series Electric Toothbrush - Sonic Toothbrush with 2 Intensity Levels, EasyStart Feature, SmarTimer, 14

£9.99

Pros and cons

Pros

Two intensity options and gradual power increase give manual-brush users a gentler transition to sonic brushing.
Timed prompts provide a simple structure for covering areas and reaching a two-minute session.
A rechargeable battery with a stated routine-use duration of up to 14 days may reduce how often charging is needed.

Technical specifications

14 specifications

Identity
Brand	PHILIPS
Model	HX4021/01
Colour	White
Intended age range	Adult

Brushing and operation
Intensity settings	2
Operation mode	Automatic
Brushing movement	Vibrate
Timer feature	Brushing Timer
Head shape	Oval
Bristle material	Nylon
Handle material	Plastic
Item firmness description	Medium

Battery and dimensions
Claimed battery runtime	up to 14 days of regular brushing after 1 full charge
Dimensions listed	5.5 x 10.8 x 22 centimetres

What to know before buying

Listing details to confirm

Listing details are inconsistent about the included toothbrush series: the title identifies the 2100 Series, while the set description says it includes a 2000 Series toothbrush. The battery claim is also qualified by regular use, with the description specifying standard mode and two minutes twice daily. Confirm the selected model and kit contents before buying.

Who is it for?

A good fit for

Adults moving from manual brushing to an electric toothbrush who want gradual-start assistance.
Buyers who prefer two intensity choices and timed prompts for a routine brushing session.
People looking for a rechargeable toothbrush with a stated routine-use battery life of up to 14 days.

Less suited to

Buyers who need a confirmed 2100 Series bundle without first checking the series discrepancy in the listing.
Anyone seeking more than two intensity settings, based on the supplied product details.

Philips Sonicare 2100 Series Electric Toothbrush HX4021/01 · photo 2 — Additional product photo 2

Customer reviews on Amazon

4.5 / 5 · 634 ratings

5 stars78%78%
4 stars11%11%
3 stars3%3%
2 stars1%1%
1 star7%7%

Customer feedback reports positive impressions of build quality, cleaning effectiveness and battery life, including a mention of the pacing prompt for thorough brushing. Comfort is mixed, with some finding it comfortable and others uncomfortable. These reports may matter if you value timed brushing and fewer charging interruptions, but comfort is personal and the stated battery duration remains a listing claim.

Positive themes

Customers report good quality and effective cleaning.
Some customers praise battery life and mention the pacing prompt as helpful for thorough brushing.

Mixed feedback

Comfort experiences differ, with some customers finding the toothbrush comfortable and others reporting discomfort.

Frequently asked questions

How many intensity settings does the HX4021/01 have?

The listing specifies two settings, described as Medium and Low.

How do the brushing prompts work?

The listing says BrushPacer prompts a change of area every 30 seconds, while SmarTimer indicates completion of a two-minute session.

How long does the battery last?

The listing claims up to 14 days of regular brushing after a full charge. Its description bases this on standard mode, two minutes per session and twice-daily brushing.

What toothbrush is included?

The title identifies the product as a 2100 Series toothbrush, but the set description names a 2000 Series toothbrush. Check the selected listing’s kit details before purchase.