Philips Sonicare DiamondClean HX9912/17 Electric Toothbrush - Black

Philips Sonicare DiamondClean HX9912/17 Electric Toothbrush - Black
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How it works


Achieve whiter and healthier teeth using the Philips Sonicare DiamondClean HX9912/17 Electric Toothbrush. A perfect choice for your oral health care, this toothbrush comes packed with four handy modes for everyday clean, deep clean, gum health, and surface stain removal. It also incorporates the reliable C3 Premium Plaque Control brush head, giving you 4x more surface contact*.

Key Features

  • Deep Clean: Get up to 10x more plaque removal! The Philips Sonicare DiamondClean comes with a premium brush head with flexible sides to help tackle hard-to-reach spots. Plus, with the unrivalled Sonic Technology, you can enjoy gentle vibrations and more efficient cleaning.
  • Convenient Modes: To accommodate different brushing needs, DiamondClean comes with four cleaning modes, including Clean, White+, Gum Health, and Deep Clean+. It also offers three intensity levels so you can instantly boost power or lower it for sensitive mouths.
  • Handy Sonicare App: The toothbrush works in tandem with the Sonicare App, allowing you to receive a personalised Progress Report and monitor your brushing experience. It also supports Bluetooth v4.0 for seamless pairing to your smart device.
  • Built-In Pressure Sensor: Thanks to its integrated smart sensor, you can easily know when you’re applying too much pressure while brushing. This helps you improve your brushing habits for better oral health.
  • BrushSync Technology: This Philips Electric Toothbrush intelligently syncs your brush head, so you can get the right mode and intensity every time. It also offers a replacement reminder to alert you when it is time to change brush heads.
  • Broad Compatibility: DiamondClean is compatible with all Sonicare brush heads and is ideal for ages 7+.
  • Long-lasting Battery: With typical use, Philips Sonicare DiamondClean’s lithium-ion battery can last for up to 14 days on a single charge. You can power it up wirelessly with a 24-hour charge time.
  • Ease of Use: Experience hassle-free operations as this electric toothbrush flaunts a slim ergonomic handle that perfectly pairs with easy click-on brush heads. It also comes with a timer function for added convenience.
  • What’s in the Box: The package includes 1 x Philips Sonicare DiamondClean HX9912/17 Electric Toothbrush, 2 x Brush heads, 1 x USB charging travel case, 1 x Charging glass, 1 x Hygienic cap, and 1 x User Guide.

*More than a manual toothbrush.

All Product Details
Brand Philips Sonicare
Product Type Electric Toothbrush
Model Number HX9912/17
Colour Black
Dental & Mouth Care Features
Timer Yes
Run Time 2 mins
Sonic Technology Yes
Pressure Sensor Yes
Cleaning Modes 4
Gum Care Yes
Whitening Yes
Deep Clean Yes
Number of Heads Included In Box 2
Real Time Feedback Yes
Age Recommended 7+
Compatible Toothbrush Head Refill All Sonicare Brush Heads
Home Appliance Connectivity Features
App Enabled Yes
Bluetooth Version v4.0
Personal Care Power Features
Corded or Cordless Cordless
Battery Type Lithium Ion (Li-ion)
Battery Life Up to 14 Days
Rechargeable Yes
Battery Indicator Yes
Charge Time 24 hours
Wattage/Voltage 110-220 V
Wireless Charging Yes
Product Width 2.60 cm
Product Depth 2.90 cm
Product Height 19.00 cm
Product Weight 0.13 kg
Manufacturers 24 Months
Philips Sonicare DiamondClean HX9912/17 Electric Toothbrush - Black is rated 4.7 out of 5 by 58.
Rated 5 out of 5 by from Beautiful Design & Excellent Performance I have the black coloured handle & brush heads. Using the gum health option on the handle with the G3 brush head I had incredible gum health recovery within 3 weeks. I sit down every time to brush my teeth and think about what I am doing. At 1st using the Sonicare App to become familiar with applied pressure and correcting brushing techniques. My gum health recovery was impressive. My dentist recommended the moth wash Savacol to kill gingivitis with proper dental flossing and daily use of interdental brushes for improved gum health. I couldn't go a day without my Sonicare DiamondClean tooth brush. Yes that good.
Date published: 2021-03-27
Rated 4 out of 5 by from Modern, fabulous, lux.... toothbrush! [This review was collected as part of a promotion.] The Philips Sonicare DiamondClean 9000 is So sleek and stylish, I absolutely love how it looks on my counter. It’s soft to the touch and grips well. My mouth feels absolutely amazing and squeaky clean after brushing, but specifically by following along with the Sonicare app. The app is honestly the star of this product. The DiamondClean is head and shoulders above my previous electric toothbrush and there is no comparison to a manual brush. I would 100% recommend this product if you’re after a modern, powerful and unique product. Highly recommend downloading the Sonicare app to use with this fabulous toothbrush!
Date published: 2020-07-11
Rated 5 out of 5 by from Hands down best electric toothbrush [This review was collected as part of a promotion.] The Philips Sonicare DiamondClean 9000 Electric Toothbrush is hands down the best I’ve ever used. I’ve alway thought my teeth were getting a good clean until I used this product. The first time I used it my teeth felt and looked instantly cleaner and smoother and after using it everyday they are also looking whiter too. I have already told everyone I know about this product because I really do love it so much, I will never go back to any other product and I’m looking at purchasing my family one each too in the future.
Date published: 2020-07-17
Rated 4 out of 5 by from A Better Electric toothbush with no Spin [This review was collected as part of a promotion.] DiamondClean 9000 Electric Toothbrush with its wireless charging glass and black finish is more stylish then traditional electric tooth brushes. Really like that the head is like a manual toothbrush and doesn’t spin rather it pulsates in your mouth delivering that just been to the dentist feel. The Apps ok, but wish i cause pause something (Toothbrush or the app) without stopping either too rinse and spit. Additionally the 2 minute timer seems a little short compared to other models but guess this could be an advantage for time poor people. Overall this high end toothbrush will surely please my Denist at my next visit.
Date published: 2020-07-16
Rated 5 out of 5 by from Unique and best electric toothbrush [This review was collected as part of a promotion.] I really like Phillips Diamond clean 9000 electric toothbrush . It is one of my favourite brand from now onwards. I am really impressed by its unique features, charging cup and travel case. The brush itself looks very stylish and luxurious. It is far better than other brands. This toothbrush is so much better than the one I was previously using it. I feel so comfortable using it compared to other cheaper brands. My teeth are cleaned and whiter after using it for only few times.You can also link it to your phone and track your daily brushing . I would definitely recommend this toothbrush to everyone. It is worth the price you pay.
Date published: 2020-07-20
Rated 5 out of 5 by from Amazing state-of-the-art toothbrush! [This review was collected as part of a promotion.] I absolutely love this toothbrush! I am amazed at how well the Philips Sonicare DiamondClean 9000 cleans my teeth; they feel as clean as when I leave my dentist! I always thought that I was getting a good clean with my previous electric toothbrush, but this toothbrush is so much better. The oscillation means that my teeth get a very deep clean, without having to press hard at all. And I love the way that I can use the toothbrush in conjunction with the Philips Sonicare app, which helps me time my brush and gives me feedback on how well I brushed! I would highly recommend this toothbrush to anyone looking for an amazing, effortless clean.
Date published: 2020-07-16
Rated 4 out of 5 by from Great toothbrush The toothbrush does a great job cleaning your teeth and they certainly feel cleaner after brushing, definitely cleaner than my previous (not a Philips) toothbrush. It seems rather loud whilst brushing but is quite tolerable. The charging glass is a great idea and works well, just drop it in (gently) and it’s charging. Battery seems to last ages. The only problem I have had so far is the app, while being a helpful guide, is completely useless. It can’t find the brush handle and I have had to download and delete it a couple of times. It recognises the handle and one or two brushes later can’t find it, so repeat process. Then repeat again! Until you get sick of it and give up. So the point is to keep a record of your brushing habits, but it cannot do that when it can’t find the brush. It looks like I brush every two or three days.
Date published: 2021-03-04
Rated 5 out of 5 by from Magical toothbrush [This review was collected as part of a promotion.] The toothbrush looks very elegant and modern. Mine is black and it perfectly blends with the decor in the bathroom. The glass charger is innovative and interesting. The travel case is beautiful and I love the additional charger perfectly positioned underneath. The app is easy to use and it is great how you can track your daily brushing and get handy tips. I can really feel that my teeth are much better cleaned with this toothbrush when compared to a regular toothbrush. I highly recommend it.
Date published: 2020-07-15
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If you feel your product has failed a Consumer Guarantee (as defined by New Zealand Consumer Law) then don't worry you can easily return it to your local Harvey Norman store. We'll even pay for the postage if you live in an area where there is no store. Our returns policy covers any purchased item ( conditions apply).

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