Philips DiamondClean Smart HX9917/89 Sonic electric toothbrush + 2 accessories and app
Philips Sonicare DiamondClean Smart 9400 Electric Toothbrush, Sonic Toothbrush with App, Pressure Sensor, Brush Head Detection, 4 Brushing Modes and 3 Intensity Levels, Black, Model HX9917/89
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Philips Sonicare DiamondClean Smart 9400 Electric Toothbrush, Sonic Toothbrush with App, Pressure Sensor, Brush Head Detection, 4 Brushing Modes and 3 Intensity Levels, Black, Model HX9917/89
Overall Rating: 2.5 / 5 (average from multiple review sources, as of 8 Feb 2026)
Based on a total of 46,321 customer reviews from independent review platforms.
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Based on a total of 46,321 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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£399.99
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Philips Sonicare DiamondClean 9400 Smart Electric Toothbrush Black Travel Case HX9917/89
Overall Rating: 4.2 / 5 (average from multiple review sources, as of 8 Feb 2026)
Based on a total of 162,619 customer reviews from independent review platforms.
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The values are derived from publicly available retailer ratings from platforms such as Feefo, http://Reviews.io , Trustpilot, and others, and are aggregated monthly.
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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 162,619 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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Philips DiamondClean Smart 9400 - Sonic electric toothbrush + 2 accessories and app - HX9917/89
Overall Rating: 1.3 / 5 (average from multiple review sources, as of 28 Jan 2026)
Based on a total of 939 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 939 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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Product Information
Battery
| Battery level indicator | Yes |
Packaging content
| Number of chargers | 1 |
| Number of handles included | 1 pc(s) |
| Charger | Yes |
| Travel case | Yes |
| Number of brush heads included | 2 pc(s) |
Power
| Battery life (max) | 336 h |
| AC input voltage | 110–220 |
| AC input frequency | 110-220 V |
| Rechargeable battery | Yes |
| Power source | Battery |
| Battery type | Built-in battery |
| Battery technology | Lithium-Ion (Li-Ion) |
Features
| Mobile app support | Yes |
| Detachable head | Yes |
| Purpose | Adult |
| Brush shape | Oval |
| Product colour | Black |
| Pressure sensor | Yes |
| Toothbrush frequency (pulsations) | 62000 movements per minute |
| Teeth brushing modes | Daily care, Deep clean, Whitening, Gum care, Sensitive |
| Number of teeth brushing modes | 5 |
| Timer duration modes | 2 min |
| Integrated timer | Yes |
| Number of speeds | 3 |
| Adjustable speed | Yes |
| Toothbrush type | Sonic toothbrush |
| Backlight display | Yes |
| Display type | LED |
Product information
At a glance
- Customizable modes for personalized brushing experience.
- Sleek design with premium travel charging case.
- Smart sensors for effective pressure monitoring.
Note: This text was created with the help of AI.
Experience the Ultimate Clean with Philips Sonicare DiamondClean Smart 9400
The Philips Sonicare DiamondClean Smart 9400 is perfect for anyone who desires a superior oral care experience. Whether you're a dental health enthusiast or someone looking to upgrade from a basic toothbrush, this electric toothbrush will elevate your daily routine. It’s ideal for individuals who seek a deeper clean, enhanced gum health, and a whiter smile, making it a fantastic choice for families or anyone wanting to invest in their oral hygiene. Discover more about the world of **Electric Toothbrushes** and how they can transform your brushing habits!Cutting-Edge Technology and Features
What sets the DiamondClean Smart 9400 apart is its advanced technology tailored to meet your specific dental needs. With smart sensors, it offers real-time feedback and personalized coaching to ensure you brush effectively. This electric toothbrush features multiple modes and intensities, allowing you to customize your experience. Choose between options like:- Clean Mode: For everyday use.
- White Mode: To gently lift stains for a whiter smile.
- Sensitive Mode: For gentle cleaning on delicate gums.
- Gum Care Mode: To improve gum health.
Sleek Design and Convenience
The Philips Sonicare DiamondClean Smart 9400 boasts a stunning and modern design that enhances any bathroom aesthetic. Its sleek handle is not only stylish but also comfortable to hold, allowing for a luxurious brushing experience. The toothbrush comes with a premium travel case that doubles as a charger, making it easy to take your oral care routine on the go. Plus, it includes interchangeable brush heads tailored for various needs, such as the DiamondClean head for superior plaque removal and the AdaptiveClean for gentle yet effective cleaning.Smart Features for a Unique Experience
This electric toothbrush is packed with smart features that take your brushing experience to another level. With Bluetooth connectivity, you can connect to the Sonicare app for personalized coaching and progress tracking. The app provides real-time feedback and tips, ensuring you stay on track with your oral care goals. The DiamondClean Smart 9400 also includes a long battery life, lasting up to two weeks on a full charge, so you don’t have to worry about constantly recharging. It combines innovative technology with user-friendly design, making it a must-have for those serious about achieving optimal oral health!Note: This text was created with the help of AI.
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Advanced sonic toothbrush for improved oral health: with the same brushing, it's up to 20 x more effective¹ and provides up to 15 x healthier gums² Personalise your brushing with this innovative electric toothbrush for adults: choose from 4 brushing modes and 3 intensity levels to meet your oral healthcare goals Real-time feedback: the light ring on the end of your handle will flash if you use too much pressure, so you can ease off the pressure and protect your teeth and gums Personalised guidance: connect your toothbrush to the Philips Sonicare app and receive personalised brushing guidance to maintain and improve your brushing habits #1 dental professional-recommended sonic toothbrush brand worldwide³: benefit from Philips expertise to keep your teeth and gums in the best condition The set includes: 1 x DiamondClean Smart 9400 sonic electric toothbrush, 1 x A3 Premium All-in-One brush head, 1 x G3 Premium Gum Care brush head, 1 x charging glass, 1 x USB charging travel case Contains UK 2-Pin bathroom plug for use in bathrooms. Packaging may vary.
£229.00
Temporarily out of stock. Order now and we'll deliver when available. We'll e-mail you with an estimated delivery date as soon as we have more information. Express Delivery available with Amazon Prime.
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