Philips Sonicare DiamondClean Prestige 9900 in Champagne (HX9992/21). SenseIQ senses pressure, motion and coverage up to 100× per second and adapts intensity — Philips says up to 20× more plaque removal* and 15× healthier gums** vs a manual brush.
Who it's for. Anyone who wants Sonicare’s most advanced handle: visual pressure sensor, 5 modes & 3 intensities, A3 All-in-One brush head, and optional Sonicare app coaching. Safe with braces, fillings, crowns and veneers.
In the box: Prestige 9900 handle (Champagne), A3 Premium All-in-One brush head, charging glass or travel case (pack-dependent — check gallery), USB charge. Model HX9992/21.
⭐⭐⭐⭐⭐ "Just what I was after - originally purhcased the darker colour option and was offered this is an alternative to speed up delivery time. Appreciated that from Get A Cut." — Wellington
Philips 90-day money-back guarantee. Philips offers a 90-day money-back guarantee on eligible NZ purchases of this model (Sonicare Prestige 9900). See Philips NZ terms.
SenseIQ — senses and adapts
SenseIQ tracks pressure, motion and coverage while you brush. Press too hard and it automatically steps intensity down to protect teeth and gums. Adaptive Intensity can be toggled in the Sonicare app.
Philips 90-day money-back guarantee
Philips New Zealand offers a 90-day money-back guarantee on eligible products, including the Sonicare Prestige 9900 (HX9992/21), bought from an NZ retail or online store between 1 Jan 2025 and 31 Dec 2026.
- How to claim: use it for at least 30 days. If you’re not satisfied, submit Philips’ online claim form within 90 days of purchase, then post the product back to Philips in its original packaging with your Claim ID.
- Key conditions: NZ residents aged 18+. Keep your receipt and the original packaging. You pay return postage, and refunds go by bank transfer in about 3–4 weeks. Accessories, trade seconds and auction-site purchases are excluded. Claims close 30 April 2027.
- Your rights under the Consumer Guarantees Act aren’t affected.
Up to 20× more plaque*; 15× healthier gums**
The A3 All-in-One head uses multi-angle bristles. Philips claims up to 20× more plaque removal*, 15× healthier gums in six weeks**, and up to 100% more stain removal in under two days vs a manual toothbrush.
5 modes and 3 intensities
- Modes for Clean, White+, Gum Health, Deep Clean+ and Sensitive (names follow the Prestige 9900 handle)
- Three intensity levels so you can start gentle and step up
- Visual pressure sensor on the handle — easy to see if you’re pressing too hard
- BrushPacer guides you around the mouth for a full 2-minute clean
Sonicare Fluid Action + app
62,000 bristle movements per minute drive fluid between teeth and along the gumline. Pair with the Sonicare app for real-time pressure, coverage and time feedback, plus progress reports. Brushing data can sync even if the app is closed.
Charging, travel and care
- Long battery life between charges
- Rinse the brush head after each use; replace about every 3 months
- Travel case / charging glass keeps the handle protected on the road
See it up close




Full specs
- Model: HX9992/21 · Colour: Champagne
- Technology: SenseIQ + Sonicare Fluid Action
- Modes: 5 · Intensities: 3 · Visual pressure sensor
- Brush head: A3 Premium All-in-One
- App: Philips Sonicare (optional)
Warranty
Philips gives a 2-year limited warranty on Prestige handles. Register on Philips’ site and keep your Get a Cut receipt.
FAQ
Genuine Philips? Yes — HX9992/21 from Get a Cut NZ.
Champagne or Midnight Blue? Same tech — Champagne is this listing. The other colour is listed separately.
Need the app? SenseIQ works on the handle; the app adds coaching and reports.
Philips footnotes (from philips.co.nz HX9992):
* Up to 20× more plaque removal vs a manual toothbrush.
** Up to 15× healthier gums in six weeks vs a manual toothbrush.
¹ No. 1 dental professional recommended sonic toothbrush brand worldwide (Philips survey footnote).










