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2 year warranty
Welcome gift £10*
30-day return

Healthy lifestyles start here. Sign up and get exclusive offers

2 year warranty

Welcome gift £10*

30-day return

All series

Philips Sonicare DiamondClean 9900 Prestige Rechargeable Toothbrush

New

Support

Philips Sonicare DiamondClean 9900 PrestigeRechargeable Toothbrush

HX9815/98

Philips Sonicare DiamondClean 9900 Prestige Rechargeable Toothbrush

New

Available in

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Get the most out of your product

How to brush
Low battery sign
Selecting the intensity level
Selecting your mode

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Register within 90 days after purchase and get an extended warranty (conditions may apply).

Manuals & Documentation

User manual

PDF file, 7.1 MB
18 June 2026

EU Declaration of conformity - English (US)

ZIP file, 1.3 MB
10 July 2026

Frequently Asked Questions

Parts & Accessories

Premium All-in-One
4 pack brush heads
HX9094/88
- Removes 20 x more plaque*
- 100% whiter teeth in 2 days***
- Up to 15 x healthier gums in six weeks*
- Soft
- 4-pack
Premium All-in-One
2-pack brush heads
HX9092/88
- Removes 20 x more plaque*
- 100% whiter teeth in 2 days***
- Up to 15 x healthier gums in six weeks*
- Soft
- 2 pack

Troubleshooting

Warranty and service

Check the terms of your warranty and start a product exchange or repair

Warranty

Our product warranty policies

Service and exchange

Get your broken product serviced or replaced