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Philips Sonicare DiamondClean Smart 9400 Rechargeable Toothbrush

HX9917/90

Gently removes up to 20 x more plaque*

20 x more effective on plaque*, gentle on gums
Sonicare Fluid Action
Help protect your gums with our pressure sensor
Choose your ideal cleaning experience
Real-time feedback and brushing insights

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Philips Sonicare DiamondClean Smart 9400 Rechargeable Toothbrush

20 x more effective on plaque*, gentle on gums

Everyone cleans differently, so we designed this brush head with multi-angle bristles to keep plaque removal on course no matter your technique. Our All-in-One A3 brush head delivers our best cleaning and removes up to 20 x more plaque, 15 x healthier gums in six weeks and up to 100% more stain removal in less than two days versus a manual toothbrush.

Sonicare Fluid Action

Philips Sonicare toothbrushes clean gently yet effectively and care for your teeth and gums with 62,000 bristle movements per minute. Sonicare Fluid Action supports the bristles to clean by driving fluid deep between teeth and along the gumline.

Help protect your gums with our pressure sensor

This Sonicare electric toothbrush has a light ring at its base that gently lets you know if you're overdoing the pressure. Simply ease off when it lights up to help your gums stay protected.

Choose your ideal cleaning experience

Enhance your oral care routine with 12 brush settings. Whether you're looking for a deep clean or a specific focus, you can have it with this electric toothbrush. Select from five modes - Clean, White+, Gum Health and Deep Clean+ - and adjust to one of three intensity levels for a personalised clean.

Real-time feedback and brushing insights

Achieve your oral health goals with your Sonicare toothbrush and app. The two pair seamlessly to provide brushing guidance, real-time feedback and insights to improve your brushing routine. With advanced coaching and progress tracking, you'll get the most out of every brushing session. Together, you are unstoppable.

Designed to care, with care

From its slim design to the sleek charging glass, this electric toothbrush is designed with attention to detail by our dedicated designers and engineers. Plus, the compact travel case keeps your toothbrush protected wherever you go.

Keep brushing your best with the brush head replacement reminder

Did you know brush heads become less effective after three months? Dental professionals recommend changing your brush head regularly, so that's why Philips Sonicare toothbrushes have a brush head replacement reminder. It tracks how often and how hard you brush, then reminds you to replace your brush head once it's time for a new one.

14 days of regular brushing

Experience up to 14 days of regular brushing after a single charge, bringing a new level of convenience to your brushing routine.

Technical Specifications

Intensities

High

To boost your clean

Medium

For an everyday clean

Low

For sensitive teeth and gums
Power

Voltage

100-240 V
Technical specifications

Battery

Rechargeable

Operating time (full to empty)

14 days

Energy consumption

Standby without display <0.06 W

Battery type

Lithium ION
Design and finishing

Colour

Grey
Service

Warranty

2-year limited warranty

Software support

Philips offers relevant software updates for a period of 2 years after the date of purchase.
Compatibility

Android compatibility

Android phones with Bluetooth 4.0 and above

Bluetooth wireless technology

Connected Sonicare app

iOS compatibility

iPhone with Bluetooth 4.0 and above
Ease of use

Handle

Sleek and compact design

Battery indicator

Illuminated icon indicates battery life

Handle compatibility

Easy click-on brush heads

Timer

BrushPacer and Smartimer
Items included
Handle

1 DiamondClean Smart 9400

Brush heads
- 1 A3 All-in-One
- 1 G3 Premium Gum Care
Charger

1 Charging base and glass

Travel case

1 Charging travel case
Cleaning performance

Plaque removal

20 x more effective*

Gum Health

Up to 15 x healthier gums**

Whitening

Up to 100% more stain removal***

Speed

62,000 brush movements/min
Modes

Clean

For exceptional everyday cleaning

Deep Clean+

For an invigorating deep clean

Gum Health

Gently massages your gums

White+

To help remove surface stains
Smart sensor technology
Pressure feedback
- Ring lights up purple
- Vibration and pulsing sound
Replacement Reminder

Lets you know when to replace your brush head
Sonicare app

Real-time coaching

Receive feedback on pressure, motion and coverage to improve your brushing technique as you go.

Tracking and progress reports

Track your brushing habits and improvements over time with in-depth data and personalised insights.

Personalised guidance

Get customised brushing tips based on your brushing patterns and habits.

What's in the box?

Other items in the box

Sonicare handle Diamond Clean Smart 9400
Premium All-in-One Brush Head (A3)
Premium Gum Care Brush Head (G3)
Glass charger
USB-C Charging Travel Case