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In this guide
An electric toothbrush is two purchases under one price. The handle is durable; the head is a consumable, and the Philips manual says to change it every three months. Over four years you buy one handle and sixteen heads.
At Philips UK the handle is £59.99, with a 2 year warranty banner and a 30-day return banner on the page. Philips UK prints no price for the heads on the handle page; Amazon.co.uk, dispatching and selling the four-pack itself, asks £19.99, which is one year of heads.
Our verdict
A rechargeable brush with a timer and pacer, priced at £59.99 by Philips UK. Heads add about a third of that each year, so price the handle at more than one shop before you buy.
- A good fit for
- Someone moving off a manual brush who wants the timer and the pacing, and who will actually replace heads every three months.
- We would skip it if
- You would run one head for a year, when only the timer still earns its keep, or you want pressure sensing, mode choice or a travel case, which this tier lacks.
Reasons to consider it
- A two-minute timer with thirty-second quadrant pacing removes the guesswork from how long to brush
- The listed fourteen-day battery makes charging an occasional event rather than a nightly one
- Amazon.co.uk sells the standard C1 ProResults four-pack at £19.99 and describes it as compatible with every Sonicare except Philips One
The compromises
- A year of heads, four of them, costs £19.99 at Amazon.co.uk, roughly a third of the handle's price at Philips UK
- Easy-Start ramps power over the first fourteen brushings, which is a comfort feature rather than a cleaning one
- The entry tier has no pressure sensor, no travel case and no mode selection; the handle charges from USB, and the wall adapter is sold separately
What we have not verified: This is not dental advice; a dentist decides what suits a particular mouth. Philips states its plaque figure as clinically proven against a manual brush and does not link the study. The handle price is the least settled number here: Philips UK lists £59.99, and a marketplace seller on Amazon.co.uk lists the same model for far less, so check more than one retailer.
The things in this guide
A closer look at the products, who they may suit, and what to check before buying.
1100 Series Sonic Toothbrush · HX3641/02
The timer and quadrant pacer are the features that change how someone brushes, and this is the entry handle that carries them.
Before you buy: Four heads a year cost £19.99 at Amazon.co.uk on the day read. Compare the handle price across shops, and be sure the household will keep buying heads every three months.
Price checked 17 October 2026. Retailer prices can change.Two minutes and four quadrants
Philips UK lists SmarTimer at two minutes and QuadPacer, which marks each quarter of the mouth, plus 31,000 brush strokes per minute and a 14 day battery claim based on two two-minute brushings a day. The manual adds Easy-Start, which raises power gradually over the first fourteen brushings.
The pacing is what changes behaviour. Most people underestimate two minutes badly and spend them unevenly; a signal at each quadrant fixes both without asking anything of you. If you already brush to a phone timer you gain less, and the gain comes from the signal, not from a measured result in your mouth.
A year of heads against the price of the handle
The manual says to change the head every three months, so a single user needs four a year. Philips UK shows no head price on the handle page. Amazon.co.uk, shipping and selling the C1 ProResults four-pack itself, asks £19.99 on the day read, £5.00 a head.
A year of heads is therefore about a third of the handle's £59.99, and four years of heads cost more than the handle did. Prices move: Amazon.co.uk's own handle page shows a marketplace seller offering the same HX3641/02 well under Philips' price, so the handle deserves a second look at another shop before you pay £59.99.
One head fits nearly the whole range
The Amazon.co.uk listing describes the C1 ProResults head as compatible with all Sonicare electric toothbrushes except Philips One. Philips UK's own six-pack page names other handles in its compatibility list and does not name the 1100, so the retailer's wording is the only statement on this point that includes the 1100.
If two people share a bathroom and one owns a higher tier, one head type means one recurring purchase. Anyone with a Philips One in the house should check first, since that is the stated exception.
Read the plaque claim as a manufacturer claim
Philips UK advertises up to 3 x better plaque removal than a manual toothbrush and calls it clinically proven, with the notes that individual results may vary and that the data is on file. The study is not linked from the page, so the figure stays a manufacturer claim.
The narrower reading is the more useful one. A powered brush with pacing helps mainly by making brushing longer and more even, which you can judge in your own bathroom. What suits your gums or your dental work is a question for a dentist, not for a product page.
When the handle is the wrong purchase
Skip it if the household buys an electric brush and then runs the same head for a year. The timer is then the only benefit still working, and a manual brush replaced every three months costs less.
Skip it too if you want what higher tiers are for: a pressure sensor that warns when you scrub too hard, selectable modes or a travel case. None of those is on this handle, and the box has a USB cable with no wall adapter, so you may need to buy one.
How we put this together
Built from the product pages and listings below, without test scores or results we have not measured. Specifications and prices change, so check the original page for the exact model, current price, delivery, and returns.
- Philips UK: 1100 Series Sonic electric toothbrush HX3641/02 (opens in a new tab)
- Philips UK: Sonicare ProResults 6-pack brush heads HX6016/87 (opens in a new tab)
- Amazon.co.uk: Philips Sonicare C1 ProResults, 4 Pack, HX6014/87 (opens in a new tab)
- Philips: Sonicare 1100 Series user manual (opens in a new tab)
- Amazon.co.uk: Philips Sonicare 1100 Rechargeable Electric Toothbrush HX3641/02 (opens in a new tab)
