Philips Sonicare DiamondClean 9900 Prestige HX9813/91 Sonic Toothbrush

1 / 7

Product guide

Philips Sonicare DiamondClean 9900 Prestige HX9813/91 Sonic Toothbrush

Philips Sonicare DiamondClean 9900 Prestige HX9813/91 is a rechargeable sonic toothbrush with SenseIQ pressure adaptation, coverage guidance and a charging travel case. Its handle display works without a phone, while Bluetooth app syncing is optional. Customer feedback praises cleaning and travel convenience but raises concerns about reliability, battery life and cost.

At a glance

SenseIQ adapts brushing intensity to the user's style, while pressure feedback provides real-time guidance.
Coverage feedback indicates areas to clean and the handle display can show areas to retouch after brushing.
Choose from eight modes and three intensities on the handle. Bluetooth app syncing can add progress tracking and tips.
Manufacturer claims 62,000 bristle movements per minute and includes a charging travel case and charging base with glass.

Price

£249.99Save 58%

Reference price: ~~£599.99~~

Price checked: 12 Nov 2026

View offer Ahead of Black FridayExplore the selection

Often bought together

Philips Sonicare A3 Premium All-in-One, Genuine Replacement Toothbrush Heads, White, 4 Pack, HX9094/87

£36.97

Pros and cons

Pros

Handle-based controls and feedback mean core smart guidance does not require a smartphone app.
Charging travel case and charging base with glass are listed in the supplied contents.
Eight modes and three intensities offer multiple ways to tailor brushing.

Cons

Customer feedback includes concerns about reliability, durability and battery charge retention.
Some customers consider the toothbrush expensive, so the advanced guidance and included charging accessories need to justify the cost for the buyer.

Technical specifications

18 specifications

Identity
Brand	PHILIPS
Model	HX9813/91

Brushing and controls
Settings	24
Modes	8 modes
Intensities	3 intensities
Brush-head firmness	Soft
Brush-head shape	Oval
Bristle material	Nylon
Handle material	Plastic
Movement rate	62,000 bristle movements per minute

Connectivity and guidance
Connectivity	Bluetooth Connectivity
Operation mode	Automatic

Power and battery
Power configuration	battery_powered_rechargeable

Dimensions and installation
Weight listed	0.74 Kilograms
Package dimensions	25.2 x 16.8 x 10.1 cm; 736 g

Other details
Colour	White
Age range	Adult
Country of origin	China

What to know before buying

Listing details to confirm

Philips describes adaptive pressure and coverage features as guidance, not as a substitute for brushing technique. The stated plaque, gum-health and stain-removal comparisons are manufacturer claims, not independently verified results. The listing gives no runtime or battery-life figure, despite customer concerns about charge retention.

What’s in the box

Included

1x Next-Generation DiamondClean 9900 Prestige rechargeable sonic toothbrush
1x A3 All-in-One brush head
1x Prestige charging travel case
1x Prestige charging base
1 glass

Who is it for?

A good fit for

Adults wanting on-handle pressure and coverage guidance without needing an app for core features.
Buyers who want a travel charging case and multiple brushing modes and intensities.

Less suited to

Buyers prioritising a clearly stated battery runtime or a basic, lower-cost brush.
Anyone who does not want a connected toothbrush or its additional guidance features.

Philips Sonicare DiamondClean 9900 Prestige HX9813/91 Sonic Toothbrush · photo 2 — Additional product photo 2

Customer reviews on Amazon

4 / 5 · 749 ratings

5 stars63%63%
4 stars12%12%
3 stars4%4%
2 stars5%5%
1 star16%16%

Customer feedback highlights effective cleaning and appreciation for the travel case, both relevant to the sonic brushing system and listed travel accessory. Reports about reliability and battery life are mixed or critical, including concerns about products stopping or breaking and not holding charge. App reactions are mixed, and some customers consider the brush overpriced. These reported experiences matter because the listing does not specify battery runtime, while the guidance and app features are central parts of the product proposition.

Positive themes

Customers describe the toothbrush as effective at cleaning teeth and appreciate its travel case.

Negative themes

Customers raise concerns about durability and value for money, with reports of breakage and dissatisfaction with the price.

Mixed feedback

Feedback on reliability and battery life is mixed, with some customers reporting problems and others saying the toothbrush works well.
App functionality receives mixed reactions, with some finding it useful and others considering it a gimmick.

Frequently asked questions

Does the toothbrush require the Sonicare app?

No. The listing says core smart features are available on the handle display. Bluetooth connection to the app is optional for progress tracking and additional tips.

How many brushing modes and intensities are listed?

The feature description specifies eight modes and three intensities. The title and product details also state 24 settings.

What is included?

The manufacturer contents list names the toothbrush, one A3 All-in-One brush head, one Prestige charging travel case, one Prestige charging base and a glass.

How long does the battery last?

The supplied listing does not give a runtime or battery-life figure. Customer feedback includes reports of charge-retention problems, so buyers for whom runtime matters should take that uncertainty into account.