Name: Philips Sonicare DiamondClean Smart 9400 HX9917/89
Brand: Philips
SKU: 894866
Price: 214 EUR
Availability: InStock
Rating: 8.4 (20 reviews)

Go to main content

Ordered before 23:59, delivered tomorrow for free

Unopened exchange

11 stores

Ordered before 23:59, delivered tomorrow for free

Unopened exchange

11 stores

Business Stores Customer service

Product information
Reviews
Accessories
Insurance
Similar and better products
Specifications

Product information

Pros and cons

According to our electric toothbrush expert

You can easily charge your toothbrush on the go with the rechargeable travel case.
On the mouth map in the app, you can see which parts of your teeth you brush well and which parts you can brush better.
With 4 brushing modes and 3 intensity levels, you can easily adjust the settings to fit your teeth and gums.
The toothbrush doesn’t have SenseIQ technology, so you can choose the right brushing mode yourself.

Description

With the Philips Sonicare DiamondClean Smart 9400 HX9917/89, you can focus on cleaning every part of your teeth. This electric toothbrush works with an app that shows a mouth map. This way, you can see exactly which teeth you’re giving extra attention to while you brush. You can safely take the toothbrush with you when you travel and charge it on the go in the rechargeable travel case. You can choose from 4 different brushing modes, so you’ll always find a mode that fits your teeth. With 3 intensity levels, you can adjust the brushing speed to your preference. This lets you brush comfortably and give your teeth and gums the right care.

Tips for using this product

This is what you get

Manual(3.33 MB)
Premium All-in-One brush attachment (1x)
Premium Gum Care brush attachment (1x)
Charging glass (1x)
Rechargeable travel case with USB port (1x)

Key specs

	Brushing motions	62000 ppm
	Pressure sensor method	Light signal, Pulsation/rotation slow down, Via application
	Brush attachment usage period	6 months
	Functions in app	Brush attachment replacement indicator, Brushing frequency, Mouth map, Pressure sensor, Timer
	Compatible with smartphone / apps
	Toothbrush brushing technology	Sonic
	Maximum battery life	56 min
	Battery charging time	24 hours

Show all specifications

Reviews

Rating

5 stars

4 stars

3 stars

2 stars

1 star

Most helpful reviews

Review is 6,0 out of 10.

Nice toothbrush that breaks easily

Sonicare really cleans very finely and thoroughly
Every Sonicare I've had breaks down around 2 years old, the motor then comes loose from the toothbrush

I have had Sonicare toothbrushes for years and they brush really well, but they always break after about 2-3 years. Then the motor comes loose from the toothbrush and it only makes a lot of noise, but no more brushing takes place. As long as this happens within 2 years, it is not a problem because you will then receive a new one under the warranty.

Martijn
31 May 2024
Automatically translated from Dutch

Review is 8,8 out of 10.

Top toothbrush for clean and healthy teeth!

The toothbrush has a better coating, which makes it easy to keep clean and beautiful compared to my old electric toothbrush from Philips.
It takes some getting used to the linked app with brushing advice, but it actually helps to brush more consciously.
Nice design brush (black)

Nice and beautiful electric toothbrush. After more than 7 years my old one was ready for a new one, despite the high price I am very happy with this purchase.

Chantal
23 January 2022
Automatically translated from Dutch

Insure your electric toothbrush

Receive more coverage in case of damage than with your standard warranty. Coolblue takes care of everything: from taking out the insurance to repairs. Is a repair not possible? You receive the purchase price as CoolblueCredit.

What am I insured for?

Fall and impact damage
Water damage
Manufacturing defects outside the warranty

What am I not insured for?

Damage you deliberately cause
Damage that doesn't affect the product functioning (such as scratches)
Damage due to gross negligence

XCover insurace

XCover is allowed to arrange and process insurances on behalf of the insurer. The insurances are governed by Belgium law. If you have a complaint, you can contact the or our customer service.

How do I insure my electric toothbrush?

First, add your electric toothbrush to your shopping cart. On the next page, choose the Protection Plan below. You always have a 30-day return window and pay no deductible in case of damage.

XCover Protection without theft cover

3-year advance payment
15,99 one-time payment (5,33 per year)
2-year advance payment
7,99 one-time payment (4,- per year)

The insurance can be canceled every year, even if you have paid in advance. If you cancel earlier, you will receive a refund for the overpaid amount.

Philips: up to € 50 cashback

If you purchase the Philips Sonicare DiamondClean Smart 9400 HX9917/89 between 1 December 2025 and 5 January 2026, you'll receive a cashback of up to € 50 from Philips. You can register your product for the Philips promotion until 19 January 2026. Go to the promotional Terms and Conditions (PDF) for more information.

Similar and better products

- Current product
  Philips Sonicare DiamondClean Smart 9400 HX9917/89
- Philips Sonicare DiamondClean 9000 HX9913/18
- Philips Sonicare Prestige 9900 HX9992/12
- Philips Sonicare Prestige 9900 HX9992/11
- Philips Sonicare DiamondClean Smart 9400 HX9917/88
- 214,-
- 242,-
- 225,-
- 216,-
- 214,-

Compatible with smartphone / apps
- Yes
- Yes
- Yes
- Yes
- Yes
Brushing motions
- 62000 ppm
- 62000 ppm
- 62000 ppm
- 62000 ppm
- 62000 ppm
Maximum battery life
- 56 min
- 56 min
- 56 min
- 56 min
- 56 min
Number of included brush attachments
- 2
- 2
- 1
- 1
- 2

Show full comparison

Specifications

Product

Product
	Product number	894866
	Manufacturer code	HX9917/89
	Brand	Philips
	Warranty	2 years
	Processing of your defect	Via Coolblue

General

General
	Brush head	Oblong
	Toothbrush brushing technology	Sonic
	Quantity	1
	Pressure sensor
	Pressure sensor method	Light signal, Pulsation/rotation slow down, Via application
	Children's toothbrush

Brushing ease

Brushing ease
	Brushing mode types	Intense brushing mode, Massage brushing mode, Standard brushing mode, Teeth whitening brushing mode
	Brushing motions	62000 ppm
	Timer
	Interval timer

Brushing via smartphone

Brushing via smartphone
	Compatible with smartphone / apps
	Contains artificial intelligence (AI)
	Analysis method	Microchip
	Functions in app	Brush attachment replacement indicator, Brushing frequency, Mouth map, Pressure sensor, Timer
	Dimension mouth map	3D
	Controlled via Android app
	Controlled via Apple app

Brush attachment

Brush attachment
	Number of included brush attachments	2
	Brush attachment included	Philips Premium All-in-One, Premium Gum Care
	Brush attachment usage period	6 months
	Brush attachment replacement indicator

Power supply

Power supply
	Power supply type	Rechargeable battery
	Charger type	Charging glass, Travel pouch
	Maximum battery life	56 min
	Battery charging time	24 hours
	Battery technology	Lithium-ion
	Battery level indicator
	Charging indicator

Accessories

Accessories
	Included by default	Charging dock, Charging glass, Rechargeable travel pouch with USB port

Physical properties

Physical properties
	Color	Black
	Material	Plastic
	Finish	Matte
	Width	2,75 cm
	Depth	3,05 cm
	Height	19,18 cm
	Weight	840 g

This is the one

Philips Sonicare DiamondClean Smart 9400 HX9917/89

Review is 8,4 out of 10, based on 20 reviews.

anything for a smile

Ordered before 23:59, delivered tomorrow for free

11 stores

Our app

Ordered before 23:59, delivered tomorrow for free

11 stores

Our app

Philips Sonicare DiamondClean Smart 9400 HX9917/89

Better toothbrush that automatically chooses the right brushing mode

Philips Sonicare Prestige