Philips Sonicare Next-Generation DiamondClean 9900 Prestige Sonic Electric Toothbrush - with SenseIQ, Smart Coverage Feedback, Smart Pressure Feedback and 24 Settings, Quartz Black, HX9815/92
Philips Sonicare Next-Generation DiamondClean 9900 Prestige Sonic Electric Toothbrush - with SenseIQ, Smart Coverage Feedback, Smart Pressure Feedback and 24 Settings, Quartz Black, HX9815/92
Overall Rating: 2.4 / 5 (average from multiple review sources, as of 18 Sept 2026)
Based on a total of 48,234 customer reviews from independent review platforms.
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Based on a total of 48,234 customer reviews from independent review platforms.
Sources & Transparency:
The values are derived from publicly available retailer ratings from platforms such as Feefo, http://Reviews.io , Trustpilot, and others, and are aggregated monthly.
All brand names and logos are the property of their respective owners.
Notice:
pricehunter.co.uk cannot guarantee that published shop ratings originate from consumers who have actually made a purchase from the reviewed retailer.
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£634.99
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Philips DiamondClean 9900 Prestige - Rechargeable Toothbrush - HX9815/92
Overall Rating: 1.3 / 5 (average from multiple review sources, as of 19 Sept 2026)
Based on a total of 1,006 customer reviews from independent review platforms.
Sources & Transparency:
The values are derived from publicly available retailer ratings from platforms such as Feefo, http://Reviews.io , Trustpilot, and others, and are aggregated monthly.
All brand names and logos are the property of their respective owners.
Notice:
pricehunter.co.uk cannot guarantee that published shop ratings originate from consumers who have actually made a purchase from the reviewed retailer.
Based on a total of 1,006 customer reviews from independent review platforms.
Sources & Transparency:
The values are derived from publicly available retailer ratings from platforms such as Feefo, http://Reviews.io , Trustpilot, and others, and are aggregated monthly.
All brand names and logos are the property of their respective owners.
Notice:
pricehunter.co.uk cannot guarantee that published shop ratings originate from consumers who have actually made a purchase from the reviewed retailer.
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Experience a next-level clean with DiamondClean 9900 Prestige: remove 20x more plaque¹, enjoy up to 15x healthier gums², and achieve up to 100% more stain removal in less than 2 days¹ Brush smarter for complete coverage: smart coverage feedback guides you in real time, glowing blue for completed areas, and provides post-brushing feedback on the display to help retouch areas missed Achieve perfect pressure: SenseIQ adapts the intensity to your brushing style; smart pressure feedback guides you in real time, glowing green when pressure is optimal to help protect teeth and gums Tailor your care: customise your brushing session on the interactive display and choose between 8 modes and 3 intensities; connect your toothbrush to the Sonicare app to track your progress The set includes: 1x Next-Generation DiamondClean 9900 Prestige rechargeable sonic toothbrush, 4x A3 All-in-One brush heads, 1x Prestige charging travel case, 1x Prestige charging base and glass This Philips Sonicare toothbrush is covered by a 2-year limited warranty, and Philips offers a 100-day money-back guarantee if you are not satisfied with the product
£634.99
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Product Information
Technical details
| Operating time (Full to Empty) | 14 days |
| Smartimer | None |
| Cleaning modes | For exceptional everyday cleaning |
| Glass charger | Yes |
| Sensitive modes | For sensitive teeth and gums |
| Deep clean mode | Yes |
| Timer | BrushPacer and Smartimer |
| Easy click-on brush head | Yes |
| Gum Health mode | Gently comforting your gums |
| Replacement reminder | Lets you know when to replace your brush head |
Battery
| Rechargeable battery | Yes |
| Battery level indicator | Yes |
| Battery technology | Lithium-Ion (Li-Ion) |
Other features
| Warranty period | 2 year(s) |
Packaging content
| Included brush heads | 4 A3 All-in-One |
| Number of chargers | 1 |
| Number of handles included | 1 pc(s) |
| Number of charging cases | 1 |
| Charging case | Yes |
| Charger | Yes |
| Number of brush heads included | 4 pc(s) |
Power
| Battery life (max) | 336 h |
| Charging base | Yes |
| AC input voltage | 100-240 V |
| Power source | Battery |
| Battery type | Built-in battery |
Features
| Mobile app support | Yes |
| Bluetooth | Yes |
| Compatibility | iPhone with Bluetooth 4.0 and above ; Android phones with Bluetooth 4.0 and above |
| Purpose | Adult |
| Brush change indicator | Yes |
| Product colour | Black |
| Smart pressure sensor | Yes |
| Toothbrush frequency (pulsations) | 62000 movements per minute |
| Teeth brushing modes | Sensitive, Gum care, Deep clean, Whitening, Polishing |
| Number of teeth brushing modes | 8 |
| Timer duration modes | 2 min, 4 x 30 sec |
| Integrated timer | Yes |
| Number of speeds | 3 |
| Adjustable speed | Yes |
| Toothbrush type | Sonic toothbrush |
| Display included | Yes |
Product information
At a glance
- Advanced sonic power removes plaque effectively.
- Sleek design enhances bathroom aesthetics.
- Smart features customize brushing experience effortlessly.
Note: This text was created with the help of AI.
Experience the Future of Oral Care
The Philips Sonicare Next-Generation DiamondClean 9900 Prestige HX9815/92 is the ideal electric toothbrush for anyone looking to elevate their oral hygiene routine. Perfect for families, dental hygiene enthusiasts, or anyone who simply wants a dazzling smile, this state-of-the-art toothbrush combines cutting-edge technology with ease of use. With its intelligent features and premium build, it's designed for those who value quality and effectiveness in their dental care routine. Discover the magic of superior cleaning with **Electric Toothbrushes** that truly make a difference!Exceptional Cleaning Power
This innovative toothbrush boasts a unique combination of **sonic technology** and **smart pressure sensor** that work in harmony to deliver up to 31,000 brush strokes per minute. This powerful cleaning action removes up to 10 times more plaque than manual brushing, ensuring your teeth remain sparkling clean and your gums stay healthy. The DiamondClean 9900 features multiple cleaning modes, including **Clean, White, and Gum Care**, allowing you to customize your brushing experience based on your specific needs. Plus, the **Smart Sensor guidance** provides real-time feedback, making it easier than ever to achieve that perfect brushing technique.Sleek and Stylish Design
The Philips Sonicare DiamondClean 9900 Prestige isn’t just about performance; it’s also about style. With its **premium glass charger** and elegant design, this toothbrush adds a touch of sophistication to your bathroom countertop. The sleek handle is designed for comfort and grip, making your brushing experience enjoyable. Available in a variety of stunning colors, this toothbrush not only enhances your oral care routine but also complements your unique style. You'll want to show it off!Smart Features for Effortless Oral Care
One of the standout features of the DiamondClean 9900 is its **smart brush head recognition** technology. This innovation automatically selects the optimal cleaning mode based on the brush head you’ve attached, ensuring you always get the best performance tailored to your needs. Additionally, the **long-lasting battery life** provides up to two weeks of use on a single charge, making it a convenient companion for travel or busy lifestyles. Coupled with its **wireless charging capabilities**, this toothbrush truly embodies the future of oral hygiene, making it a must-have for those looking to invest in their smile.Note: This text was created with the help of AI.
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