Philips HX9924/14 DiamondClean Smart Sonic Electric Toothbrush with App, Black

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Product information

Boasting 4 high-performance brush heads and personalised coaching through the Sonicare app, the HX9924/14 DiamondClean Smart Sonic Electric Toothbrush offers effortless yet exceptional care for all areas of oral health.

Premium Plaque Defence
The Premium Plaque Defence brush head features soft flexible sides and bristles that contour to the shape of each tooth's surface to provide 4x more contact and remove up to 10x more plaque from hard-to-reach areas.

Premium Gum Care
Alternatively, opt for the Premium Gum Care brush head to improve your gum health. Its smaller size and targeted bristles deliver gentle yet effective cleaning along the gumline, where gum disease starts. It's clinically proven to deliver up to 100% less gum inflammation and up to 7x healthier gums in just two weeks.

Stain removal
The HX9924/14 even comes with a Premium White brush head to remove surface stains and reveal your whitest smile. With its densely packed central stain removal bristles, it's able to remove up to 100% more stains in just three days.

Long-lasting fresh breath
Lastly, the TongueCare+ brush works to gently remove odour-causing bacteria from the pores of your tongue. It has 240 specially designed MicroBristles that get between all your tongue's ridges and grooves to remove bacteria and debris that lead to bad breath. Team this with Philips' antibacterial BreathRx tongue spray for super-fresh breath.

Philips Sonicare app
Thanks to the smart location sensor, you'll always know where you've brushed, and where you haven't for 100% coverage. Real-time tracking on the Philips Sonicare app that lets you know when you've achieved a thorough clean. Plus, if your dentist has highlighted any trouble areas, the app will flag them on your 3D mouth map and remind you to take extra care.

Additional features:

  • Built-in sensor and reminder to prevent over-scrubbing
  • Brush heads automatically select the optimal settings when clicked on
  • Brush head replacement alerts
  • USB travel case that doubles as a charger


  • 3 intensities to choose from
  • Clean mode for daily cleaning
  • White+ stain removal
  • Deep Clean+
  • Gum Health
  • Tongue Care

Battery life Information How long the battery lasts for (and if applicable) until it needs recharging
Up to 3 weeks
Model name / number
Oscillations per minute
31,000 per minute


  • Click & collect

    Click & collect from John Lewis and Waitrose shops tomorrow from 2pm
    Find out more
  • Collect+

    Collect + from a local shop from tomorrow, postcode exclusions apply
    Find out more
  • UK delivery

    Standard delivery within 5 working days
    Next or named day delivery
    Named day UK delivery pre-10.30am
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  • International delivery not available


If you’ve changed your mind about keeping your purchase, please return it in its original condition with proof of purchase and we’ll exchange or refund it. Unless faulty, this should be within 35 days of receiving your order. By original condition, we’d expect this to mean that you’ve kept packaging and labels, and that the item is undamaged and unused.

You can return for free in the UK via John Lewis shops, Royal Mail, Collect+ or MyHermes. If you need to arrange collection of large or heavy items, call us on 03456 049 049. For international returns queries, call us on +44 1698 545 454

You’ll find returns information on your delivery note. Exceptions apply to certain products - find out more about our refund policy

Q & As


  • 2 years' Added Care for your small appliance (accidental damage cover)

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Additional services

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More than 10 in stock