Product Name | HX9992/11 ELEC.TOOTHBRUSH PRESTIGE S-IQ |
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Units | 1.0 count |
Country of origin | China |
Brand | SONICARE |
Age Range Description | Adult |
Country of origin | China |
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- RESTRICTIONS: Cover is for UK residents (excluding Channel Islands and Isle of Man) aged 18 years and over. The following is not covered – Theft, loss, cosmetic damage, malicious damage, not taking reasonable care or improper use (as defined in T&Cs), virus or software problems. If you are unable to provide the insured product at point of claim for inspection it will be classed as lost and not covered.
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Philips Sonicare DiamondClean Prestige 9900 - Sonic Electric Toothbrush with 1x A3 Premium All-in-One Brush Head and Charging Case in Champagne (Model HX9992/11)
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Purchase options and add-ons
Brand | SONICARE |
Age range (description) | Adult |
Special feature | Pressure Sensor |
Power source | Battery Powered |
Item firmness description | Soft |
Colour | Champagne |
Material feature | Sustainable |
Number of items | 1 |
Toothbrush Head Shape | Oval |
Unit count | 1.0 count |
About this item
- SenseIQ technology: Philips Sonicare 9900 Prestige with SenseIQ technology senses pressure, motion, coverage and more, up to 100 times per second, it then adapts the intensity if you push too hard
- Sonicare Technology: Philips Sonicare technology pulses water between your teeth while brushing helping to breakdown plaque for an exceptional daily clean
- Same brushing, now 20x more effective: Up to 20x more plaque removal even in hard-to-reach areas*, 15x healthier gums in just two weeks**, and 100 percent less stains in less than two days***
- Personalized guidance: The Philips Sonicare app provides progress reports by day, week and month, get personalized recommendations and actionable steps for better brushing
- Set includes: 1 x DiamondClean Prestige 9900 toothbrush handle in Champagne, 1 x A3 Premium All-in-One Brush head in white, 1 x Prestige USB charging case in Champagne, 1 x Charger base, 1 x USB lead and wall adapter
- Contains UK 2-Pin bathroom plug for use in bathrooms
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Important information
Safety Information:
Choking hazard - Keep out of reach of children under 3 years. Not intended for use by children under 3 years old. Do not use for purposes other than oral hygiene. Replace brush head every 3 months or sooner if bristles become frayed. Always supervise children when brushing.
Legal Disclaimer
Philips offers relevant software updates for a period of 2 years after the date of purchase
Product description
Product Description
Get exceptional oral care, completely personalized to you - the Philips Sonicare 9900 Prestige with SenseIQ technology is our most advanced power toothbrush. It enhances our proven sonic technology with intelligence, sensing, and adapting for holistic care so you always get it right. SenseIQ technology senses your brushing style, adapts to you in real-time when you brush too hard and cares intuitively for teeth and gums. Clean without compromise with the A3 Premium All-in-One electric toothbrush head. Our all-time best has angled bristles to help remove up to 20x more plaque even in hard-to-reach areas*. The Philips Sonicare app is powered by artificial intelligence and works in perfect harmony with the toothbrush. Use it to brush with real-time guidance about pressure, motion, coverage, duration, and frequency. Our toothbrush automatically adjusts intensity when you push too hard. And with the free Philips Sonicare app, you can experience tailor-made guidance and personalized recommendations to take your brushing to the next level. Its state-of-the-art technology is so in tune with you and effortless to use that you barely know it is there. The Philips Sonicare 9900 Prestige comes with a USB-supported travel case that boasts easy charging with a minimalist stand and base. * vs. a manual toothbrush ** vs. a manual toothbrush in 6 weeks *** in lab test vs. a manual toothbrush **** based on two periods of two-minute brushings per day on standard mode
Safety Warning
Choking hazard - Keep out of reach of children under 3 years. Not intended for use by children under 3 years old. Do not use for purposes other than oral hygiene. Replace brush head every 3 months or sooner if bristles become frayed. Always supervise children when brushing.
Legal Disclaimer
Philips offers relevant software updates for a period of 2 years after the date of purchase
Box Contains
1 x Sonicare Power Electric Toothbrush; 1 x Brush head; 1 x USB Travel Case; 1 x Charging Stand
From the manufacturer



Senses your brushing style
While you clean, Philips Sonicare DiamondClean Prestige 9900 uses sensors to detect the pressure you apply, cleaning motion and coverage up to 100 times per second. The sensors also keep an eye on how long and how often you brush.
Adapts to you in real time
Most of us apply too much pressure during brushing. That’s why our toothbrush automatically adjusts intensity when you push too hard. And with the free Philips Sonicare app, you can experience tailormade guidance and personalized recommendations to take your brushing to the next level.
Proven sonic brushing
Brush away plaque with sonic technology – our benchmark in effective and gentle cleaning. While you brush, up to 62,000 bristle movements and dynamic fluid action help clean even hard-to-reach areas, leaving your mouth feeling exceptionally fresh and clean.
Real-time feedback
You might not notice when you brush too hard or start scrubbing, but your toothbrush will. The light ring on the end of your handle will gently remind you to ease off the pressure or scrubbing motion.
Product information
Technical Details
General Information
Additional Information
ASIN | B08RTFDKRC |
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Customer Reviews |
4.0 out of 5 stars |
Best Sellers Rank | 6,303 in Health & Personal Care (See Top 100 in Health & Personal Care) 25 in Sonic Toothbrushes |
Delivery information: | We cannot deliver certain products outside mainland UK ( Details). We will only be able to confirm if this product can be delivered to your chosen address when you enter your delivery address at checkout. |
Date First Available | 31 Dec. 2020 |
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Philips Sonicare DiamondClean Prestige 9900 - Sonic Electric Toothbrush with 1x A3 Premium All-in-One Brush Head and Charging Case in Champagne (Model HX9992/11)
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Product details
- Batteries : 1 Lithium Ion batteries required.
- Product Dimensions : 16.8 x 7.4 x 24.3 cm; 506 g
- Manufacturer : Philips Consumer Lifestyle B.V.
- ASIN : B08RTFDKRC
- Item model number : HX9992/11
- Country of origin : China
- Delivery information:: We cannot deliver certain products outside mainland UK ( Details). We will only be able to confirm if this product can be delivered to your chosen address when you enter your delivery address at checkout.
- Customer reviews:
What's in the box?
Customer reviews
Customer Reviews, including Product Star Ratings, help customers to learn more about the product and decide whether it is the right product for them.
To calculate the overall star rating and percentage breakdown by star, we don’t use a simple average. Instead, our system considers things like how recent a review is and if the reviewer bought the item on Amazon. It also analyses reviews to verify trustworthiness.
Learn more how customers reviews work on AmazonCustomers say
Customers praise the toothbrush for its good quality, cleaning ability, and design. They find it delivers a good clean and their teeth feel cleaner. Many appreciate the travel case. However, some customers feel the toothbrush is overpriced for its features and build quality. There are mixed opinions on functionality and battery life.
AI-generated from the text of customer reviews
Customers like the quality of the toothbrush. They say it's a good product, cleans well, and feels quality. Some mention that the battery life could be better.
"...But this is no ordinary toothbrush, it “learns” and it has now settled into a very effective brushing programme that perfectly suits my brushing..." Read more
"...The brush feels quality and is on the lighter side which is preferable for me...." Read more
"...It looks expensive and like a quality product, it feels lovely to use and has a great travel case...." Read more
"...Don't get me wrong it is a good toothbrush and delivers an excellent clean like all in the range but the toothbrush is notably smaller, lighter, and..." Read more
Customers are satisfied with the toothbrush's cleaning ability. They say it delivers a good clean and looks nice. The toothbrush removes plaque effectively, leaving teeth feeling cleaner and looking brighter.
"...to see a hygienist because, as my dentist can confirm my teeth are virtually plaque free...." Read more
"...use of the toothbrush felt like I’d been to the the hygienist, it cleans that well; whether this is the all in one head or the handle or the..." Read more
"...I am a fan of electric brushing and i do feel my teeth are much cleaner than with a manual brush...." Read more
"...Don't get me wrong it is a good toothbrush and delivers an excellent clean like all in the range but the toothbrush is notably smaller, lighter, and..." Read more
Customers like the toothbrush's design. They say it looks great and has good quality. The charging case is a luxurious and convenient choice.
"...It was comfortable to hold, nicely weighted and good to look at. The performance however was different...." Read more
"...I love the look and the feel and I’m hoping it’ll last me years. I must say though I’m glad I got it half price...." Read more
"...The toothbrush is stylish and smart, battery life is ok - lasts me around a week before i need to charge...." Read more
"...I got this new one on sale as I liked the blue and I thought the case looked nice and was more compact as the other one is a little bulky...." Read more
Customers appreciate the travel case. They find it convenient for travelers who prefer fewer cables and a compact size that is good for taking on trips. The toothbrush looks modern and great in the dark blue color.
"...case (with USB cable) is very attractive and effective, perfect for travelling...." Read more
"...and like a quality product, it feels lovely to use and has a great travel case...." Read more
"...for me purchasing this model was the desire for USB charging, a smaller handle, brand reputation, nice travel case. Ticks all the boxes...." Read more
"...relegated to being my "travel toothbrush" as it is light and has a compact case which is good for taking on aeroplanes or throwing into a small..." Read more
Customers have mixed reviews about the toothbrush's functionality. Some find it works well, looks modern, and has a great travel case. However, others report issues like malfunctioning, pressure sensor not working properly, and wobbly design.
"...It feels like a toy, not a premium toothbrush. To make matters worse, THIS SELLER HASN'T EVEN HAD THE DECENCY to respond to my complaints...." Read more
"...The performance however was different. It is actually better (I didn’t think it possible) than my old one...." Read more
"...The smart features are a complete gimmick in my personal opinion, the mouth tracking is poor and continuously gets the location wrong...." Read more
"...Another frustration is that the app is mandatory for you to set the clean functions as there is no way to cycle them on the brush with the button..." Read more
Customers have different experiences with the toothbrush's battery life. Some say it lasts around a week before needing to charge, while others report issues like it losing power quickly, stopping frequently, and turning off mid-cleaning cycle after only a few months of use.
"...My third criticism is this brush has now taken to randomly turning off mid-cleaning cycle after only 5 months, for which it’s probably going..." Read more
"...The toothbrush is stylish and smart, battery life is ok - lasts me around a week before i need to charge...." Read more
"...Not built to last, at all. Battery life is at best 1 week. No way can this be recommended...." Read more
"...plus has usb charger again always handy just in case but battery life seems limitless.. as only charged once and using 3 times daily are also the..." Read more
Customers are dissatisfied with the toothbrush's value for money. They find it overpriced for gimmicks and poor quality, especially for the price tag.
"...no evidence of any meaningful artificial intelligence in this cheap, flimsy gadget. It feels like a toy, not a premium toothbrush...." Read more
"...This feels the best yet. Got it half price. Extortionate price at full RRP. Unfortunately to change modes you need an app. Lot of hassle...." Read more
"...In fact its truly overkill considering the price...." Read more
"...It feels much cheaper and more flimsy than my old toothbrush. The charger is plastic which is also a dissapointment...." Read more
Customers are unhappy with the toothbrush's build quality. They say it feels flimsy and cheap compared to their old toothbrush. Some report that the top of the toothbrush starts crumbling after a few months, while others report that it completely fails after 20 months.
"...It feels much cheaper and more flimsy than my old toothbrush. The charger is plastic which is also a dissapointment...." Read more
"...Minus a star for the app, minus another 3 stars for the short life before going faulty, add another star back on for the easy replacement service..." Read more
"...The seals at the top of the toothbrush are crumbling away, the toothbrush settings seem to change themselves and the only way you can change them..." Read more
"Toothbrush broke after 8 months and unable to get hold of Philips customer service. Would definitely avoid this product." Read more
Reviews with images

Works well but fault develops each time
Top reviews from United Kingdom
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- Reviewed in the United Kingdom on 13 March 2025Style Name: MidnightVerified PurchaseI bought this to be used exclusively as a travel toothbrush and it does not disappoint. In fact its truly overkill considering the price. It ticked all the boxes for me, it has a nice premium leather travelling case that can be charged via any USB-C cable. The case fits both the head and the body of the brush so those reviews claiming the head doesn't fit are total nonsense. Another major winning feature for me is that it doesn't automatically turn itself off after 4 brushing periods (20s on this one) like 99% of other travel friendly toothbrushes. It just carries on for as long as you want to keep brushing. As for brushing performance its far superior to the cheaper sonic style ones too.
- Reviewed in the United Kingdom on 3 November 2023Style Name: MidnightVerified PurchaseI bought this to replace my Philips Sonicare DiamondClean Smart which finally died after 6 years of faithful service. My dentist always compliments me on my oral hygiene so much so that at 57 years of age I have yet had to see a hygienist because, as my dentist can confirm my teeth are virtually plaque free.I attribute this solely to my old Sonicare toothbrush.
I had no hesitation in immediately purchasing this new, updated version of my old toothbrush and expected it to behave in more or less the same way. In someways it did. It was comfortable to hold, nicely weighted and good to look at. The performance however was different. It is actually better (I didn’t think it possible) than my old one. Initially I thought it a little vicious in its vibration and indeed it was. But this is no ordinary toothbrush, it “learns” and it has now settled into a very effective brushing programme that perfectly suits my brushing style. My teeth have never felt so clean and I can definitely see that they are whiter.
The included charging case (with USB cable) is very attractive and effective, perfect for travelling.
In my opinion this, being Philips top of the range Sonicare has to the best electric toothbrush available. I haven’t always bought Sonicare, I have tried the others but believe me, once you give one of these a go you won’t look back and your dentist will thank you for it!
- Reviewed in the United Kingdom on 5 March 2025Style Name: ChampagneVerified PurchaseI've been a loyal Philips Sonicare customer for nearly 20 years, but their quality has been steadily declining while their prices are skyrocketing. My last Sonicare stopped working just outside the warranty, not happy but I thought I'd give this supposedly new, "improved" AI version a try. BIG MISTAKE.
This piece of junk stops halfway every single time I use it. AI? What AI? There's absolutely no evidence of any meaningful artificial intelligence in this cheap, flimsy gadget. It feels like a toy, not a premium toothbrush.
To make matters worse, THIS SELLER HASN'T EVEN HAD THE DECENCY to respond to my complaints. I also contacted Philips customer care, and guess what? No reply. For the amount of money I spent, I expect at the very least some basic customer service.
I've returned this worthless toothbrush and will never buy Philips again. Thanks for nothing, Philips!
- Reviewed in the United Kingdom on 29 December 2023Style Name: MidnightVerified PurchaseThis is the best brush I’ve ever used. I’ve gone from single use vibration one to sharing an oral b body to this and this is eons better.
I’m sensitive to rubberised material so I love that the body if this is all one material. There’s only one button, customisation is done through the app which is very intuitive and easy to set up and use. The brush feels quality and is on the lighter side which is preferable for me. Still a good weight though and feels & looks sleek & expensive.
Only got it today so can’t comment on battery but it came just over 50% charged so I’m expecting about a week. The charger itself is USB which is great - I don’t have to keep it in the bathroom. However the plastic cover does feel a little cheap compared to the rest of the brush and accessories. It’s only letdown.
The charging case is super smart and faux leather in a colour matching the brush - midnight blue in my case. I love the look and the feel and I’m hoping it’ll last me years.
I must say though I’m glad I got it half price. It’s absolutely worth that money but I’m not sure it’s worth full price.. I guess only time will tell. So far so good.
- Reviewed in the United Kingdom on 20 April 2023Style Name: MidnightVerified PurchaseFirstly, this is a VERY expensive gadget, but I believe it is worth it. I managed to get it at a reasonable price and it was a new product not a return as some others have experienced.
My first use of the toothbrush felt like I’d been to the the hygienist, it cleans that well; whether this is the all in one head or the handle or the combination of both, I don’t know- but it cleans way better then my previous sonic brushes.
It looks expensive and like a quality product, it feels lovely to use and has a great travel case. The app although a bit of a gimmick has some neat features like identifying areas you don’t clean as well or if you press to hard.
Battery seems to last for over 2 weeks, and unlike another reviewer I confirm it alerts you before it goes flat.
If you can justify £250-300 this is a great product.
- Reviewed in the United Kingdom on 2 December 2023Style Name: ChampagneVerified PurchaseHave been using sonicare for years. This feels the best yet. Got it half price. Extortionate price at full RRP.
Unfortunately to change modes you need an app. Lot of hassle. Have yet to bother.
The carrying/charging case is small. It is hard to fit handle and brush in. There is no space for usb lead unlike my previous one. Like the previous one it takes hours to fully charge.
Otherwise I am pleased with it.
Top reviews from other countries
- InnaReviewed in the United Arab Emirates on 1 March 2022
5.0 out of 5 stars Stylish and cleaning well
Style Name: ChampagneVerified PurchaseI love this product. Unfortunately it stopped connecting to the app after one week. But customer care in Dubai is so good. They changed the brush to the new on in just 24 hours. My boyfriend complained about the price but after using and seeing all the app features he said its worth it. Got him his for his birthday.
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