We use cookies to allow us and selected partners to improve your experience and our advertising. By continuing to browse you consent to our use of cookies. You can understand more and change your cookies preferences here.

Philips Sonicare Prestige 9900 HX9992/12 review

£299.99 View retailers

Test scoreShow Context

Expert review

The Philips Sonicare Prestige 9900 HX9992/12 is among the most expensive electric toothbrushes we've tested, but you get loads of features, such as smartphone compatibility and extra brushing modes. Can this smart electric toothbrush clean your teeth a lot better than less expensive models or is it a waste of money? Find out in our full Philips Sonicare Prestige 9900 review.

What's included:
  • Pros and cons
  • What is it?
  • Does it do a good job of cleaning teeth?
  • What’s the battery like?
  • Is it comfortable and easy to use?
  • Is there anything else I should know?
  • Should I buy it?
Sign up to unlock expert reviews
Full Access first month £5, then £9.99 per month, cancel at any time

First reviewed by Which?

December 2021

Released

April 2021

Technical specifications

Test results

The overall Which? test score is made up of the following star ratings, all determined by our rigorous lab tests.

Find out how we test electric toothbrushes>
Sign up to unlock test results
Full Access first month £5, then £9.99 per month, cancel at any time

Put us to the test

Our Test Labs compare features and prices on a range of products. Try Which? to unlock our reviews. You'll instantly be able to compare our test scores, so you can make sure you don't get stuck with a Don't Buy.

Compare retailers

Prices updated daily

Prices are ordered from lowest to highest, irrespective of retailer rating or stock, and exclude any potential delivery costs. We are not able to show every possible retailer and cheaper prices may be available. When you click on a retailer link on our site, we may earn affiliate commission. This supports our not-for-profit mission to empower consumers and in no way affects our recommendations. Find out more.

Best Buys and Don't Buys
We have tested 25 electric toothbrushes and found that there are 0 Don't Buys and 10 Best Buys.
Range of Electric toothbrush scores
  1. 55%
    Lowest score
  2. 75%
    Average score
  3. 87%
    Highest score
We'll show you where this model sits on the scale so that you can see how it compares to electric toothbrushes we've tested
Sign up to unlock Best Buys and Don't Buys
Full Access first month £5, then £9.99 per month, cancel at any time

Put us to the test

Our Test Labs compare features and prices on a range of products. Try Which? to unlock our reviews. You'll instantly be able to compare our test scores, so you can make sure you don't get stuck with a Don't Buy.

    CompareRemove all products