$449 before Cashback
$349 after Cashback
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Clinically proven* to work just as well as regular flossing, the Philips Sonicare DiamondClean Electric Toothbrush and AirFloss Ultra effectively cleans between your teeth with every use.

Key Features
  • The Philips Sonicare DiamondClean Electric Toothbrush and AirFloss Ultra has 5 cleaning modes (clean, polish, sensitive, gum care and white) that are available to suit your individual needs.
  • Featuring air and micro-droplet technology, the Philips Sonicare gently sprays a combination of air and mouth rinse or water to clean between your teeth and along your gumline.
  • It has 3 burst settings that you can choose using the activation button.
  • Featuring DiamondClean brush heads, the powered toothbrush effectively whitens and removes stains and plaque from teeth.
  • The Sonicare rechargeable toothbrush’s dynamic cleaning motion brings fluid through gaps between teeth and along the gumline, which provides a thorough clean.
*In-lab results. Actual in-mouth results may vary.

What's In The Box?

  • 1x AirFloss Ultra Handle
  • 1x DiamondClean Handle
  • 1x DiamondClean Standard Brush Heads
  • 1x Nozzle
  • 1x USB Travel Charger Case
  • 1x Charger
  • 1x Glass Charger


Barcode (GTIN) 8710103795360
Product Type Toothbrushes
Brand Philips
Model HX8391/02
Manufacturers Express Warranty (months) 24

If you feel your product has failed a Consumer Guarantee (as defined by Australian 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).

  • Buying Guide: Dental Care

    Matching the right toothbrush or water flosser to your daily dental routine can be tricky. Our buying guide takes you through a range of product types, highlighting their benefits and features to help you purchase the right products for a bright white smile.

Expert Reviews
Customer Reviews


Protect your purchase with Product Care®. Get a brand new replacement if your product suffers an eligible fault through our hassle free support process, plus enjoy a range of exclusive benefits and discounts each year so you experience your new product even more.

Discover all of the benefits Product Care® brings you:


With Product Care® you can relax knowing your purchase is protected. After an assessment, if your product suffers a fault covered by the terms of your plan, we’ll arrange to have a brand new replacement delivered to your doorstep.


Our range of support options ensure you experience an easy and hassle free process when you need to talk to us about your Product Care® plan. Whether you are experiencing a fault, or wanting to redeem your entitlements, we will provide you with guidance and support every step of the way.


Having Product Care® with your purchase means you can enjoy a range of special benefits that are exclusive to you and will help you enjoy the experience of your new product even more.

Conditions apply. This section should always be read in conjunction with the Terms and Conditions for Product Care® Replacement (Electrical). 

Learn more about Product Care®.

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Philips Sonicare DiamondClean Electric Toothbrush and AirFloss Ultra
HX8391/02 8710103795360

Terms and Conditions


The Promotion commences at 09.00am AEST on 30 July 2018 and ends 11:59pm AEST on 16 September 2018 (Promotional Period). All Claim Forms must be received by 5.00pm AEST on 30 September 2018. Offer is via redemption from the supplier. Terms and conditions apply. Visit suppler website for more information at: https://www.philips.com.au/c-w/promotions.html#filters=PERSONAL_CARE_GR $100 Cashback via Redemption*

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