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Philips Sonicare 9900 DiamondClean Prestige HX9992/12 - Electric Toothbrush

Reviews Philips Sonicare 9900 DiamondClean Prestige HX9992/12

Interested in reviews of Philips Sonicare 9900 DiamondClean Prestige HX9992/12? It got 4.7 out of 5 stars from our customers. Find specific customer reviews of Philips Sonicare 9900 DiamondClean Prestige HX9992/12 below. We will appreciate if you also share your experiences with Philips Sonicare 9900 DiamondClean Prestige HX9992/12 after purchasing.
236.86 € 223.81 €
In stock 1 pcs
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User Reviews

Daniel, Praha 2 - Vinohradyflag
Rated 10/04/2022, variant Philips Sonicare 9900 DiamondClean Prestige HX9992/12
Verified purchase
I recommend this brush to all ten. It leaves a feeling of absolute purity in the mouth. I wouldn't change it.
Smooth processing
Types of cleaning
Brush cleaning head
Travel case
Charging station
Synchronisation with the app
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Pavel, Kladno 1flag
Rated 19/12/2021, variant Philips Sonicare 9900 DiamondClean Prestige HX9992/12
Verified purchase
Cleans great, much better than a classic toothbrush
Fits great in the hand, holds well
Integrated wireless charger in a travel case
Many settings are only available from the app on the mobile phone, without it we have a toothbrush with one factory mode.
The app requires registration and consent to share data - there is a "no, thank you" button next to the consent, but we can't go any further than that.
High application consumption. To transfer data, the app must be running while cleaning (phone with you in the bathroom), app rating on Google Play 2 stars.
"Vegan leather" on a travel case is just a "progressive" name for leather - a nightmare from the days of socialism. They haven't found worse material?
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Anonymous customerflag
Rated 31/10/2021, variant Philips Sonicare 9900 DiamondClean Prestige HX9992/12
Verified purchase
my first electric toothbrush and great satisfaction: )
application
Design
Functions
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Oldřich, Ořechflag
Rated 02/08/2026, variant Philips Sonicare 9900 DiamondClean Prestige HX9992/42
Verified purchase
The toothbrush provides comfortable cleaning and is quieter than the previous model, while its ergonomic design ensures it's easy to handle. However, from my perspective, the premium features seem insufficiently effective for their cost. A single touch button would be ideal for a one-time setup of the brush in the app, but unfortunately, after about 3–5 uses, my device's cleaning intensity drops to the minimum, which requires reconnecting to the app and setting it up all over again. The cleaning guidance feature only monitors the tilt of the brush and determines whether you are cleaning the inner or outer side of your teeth, without detecting its precise position in the mouth. Very often, even this basic guidance doesn't work, so the brush not only doesn't know where it is, but not even how it's tilted. The accompanying app is quite confusing and it often takes a long time for it to find and connect to the brush. The app repeatedly failed to synchronise with the brush, which required non-standard solutions that are not mentioned in the official app support. All in all, considering the purchase price, I'm not very satisfied with the product.
Quieter than the last model
The touch button doesn't trap dirt.
Charges faster than the previous model
Multiple cleaning programmes
The cleaning guidance mostly doesn't work
Without regular connection to the app, the brush forgets the cleaning intensity setting.
The synchronisation of the brush with the app sometimes plays up.
The toothbrush doesn't recognise where it is in the mouth.
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Josef, Liberec 14flag
Rated 09/07/2026, variant Philips Sonicare 9900 DiamondClean Prestige HX9992/42
Verified purchase - review from a price comparison website
It cleans absolutely brilliantly and growls
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Ladislav, Praha 3flag
Rated 26/05/2026, variant Philips Sonicare 9900 DiamondClean Prestige HX9992/42
Verified purchase - review from a price comparison website
OK
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Miroslav, Teplice 1flag
Rated 26/05/2026, variant Philips Sonicare 9900 DiamondClean Prestige HX9992/42
Verified purchase
Previous versions without pressure sensors were better, ...if it could at least be turned off, but it can't, mobile app useless, I thought it would logically guide and recognize where you brush your teeth by "sensors" but it's not. For a toothbrush that I bought for almost 10k I expected it to be more flexible and according to my needs and not to have to stick to the manufacturer's fixed settings.
interrupts the cleaning intensity briefly at slight pressure
useless mobile app
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Hana, Brno 37flag
Rated 30/03/2026, variant Philips Sonicare 9900 DiamondClean Prestige Limited Edition Baby Blue HX9997/32
Verified purchase - review from a price comparison website
Perfect cleaning, connection with the app without problems, beautiful design.
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Hana, Brno 37flag
Rated 30/03/2026, variant Philips Sonicare 9900 DiamondClean Prestige HX9992/42
Verified purchase - review from a price comparison website
Perfect cleaning, connection with the app works without problems, beautiful design.
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Stavební bytové družstvo POKROK, Prahaflag
Rated 01/02/2026, variant Philips Sonicare 9900 DiamondClean Prestige HX9992/11
Verified purchase - review from a price comparison website
Quality product
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