Home » shop » Philips Sonicare DiamondClean Smart 9400 Electric Toothbrush, Sonic Toothbrush with App, Pressure Sensor, Brush Head Detection, 4 Brushing Modes and 3 Intensity Levels, Black, Model HX9917/89
Philips Sonicare DiamondClean Smart 9400 Electric Toothbrush, Sonic Toothbrush with App, Pressure Sensor, Brush Head Detection, 4 Brushing Modes and 3 Intensity Levels, Black, Model HX9917/89
Philips Sonicare DiamondClean Smart 9400 Electric Toothbrush, Sonic Toothbrush with App, Pressure Sensor, Brush Head Detection, 4 Brushing Modes and 3 Intensity Levels, Black, Model HX9917/89 - Image 2
Philips Sonicare DiamondClean Smart 9400 Electric Toothbrush, Sonic Toothbrush with App, Pressure Sensor, Brush Head Detection, 4 Brushing Modes and 3 Intensity Levels, Black, Model HX9917/89 - Image 3
Philips Sonicare DiamondClean Smart 9400 Electric Toothbrush, Sonic Toothbrush with App, Pressure Sensor, Brush Head Detection, 4 Brushing Modes and 3 Intensity Levels, Black, Model HX9917/89 - Image 4
Philips Sonicare DiamondClean Smart 9400 Electric Toothbrush, Sonic Toothbrush with App, Pressure Sensor, Brush Head Detection, 4 Brushing Modes and 3 Intensity Levels, Black, Model HX9917/89 - Image 5
Philips Sonicare DiamondClean Smart 9400 Electric Toothbrush, Sonic Toothbrush with App, Pressure Sensor, Brush Head Detection, 4 Brushing Modes and 3 Intensity Levels, Black, Model HX9917/89 - Image 6
Philips Sonicare DiamondClean Smart 9400 Electric Toothbrush, Sonic Toothbrush with App, Pressure Sensor, Brush Head Detection, 4 Brushing Modes and 3 Intensity Levels, Black, Model HX9917/89 - Image 7
Philips Sonicare DiamondClean Smart 9400 Electric Toothbrush, Sonic Toothbrush with App, Pressure Sensor, Brush Head Detection, 4 Brushing Modes and 3 Intensity Levels, Black, Model HX9917/89 - Image 8
Philips Sonicare DiamondClean Smart 9400 Electric Toothbrush, Sonic Toothbrush with App, Pressure Sensor, Brush Head Detection, 4 Brushing Modes and 3 Intensity Levels, Black, Model HX9917/89 - Image 9
Philips Sonicare DiamondClean Smart 9400 Electric Toothbrush, Sonic Toothbrush with App, Pressure Sensor, Brush Head Detection, 4 Brushing Modes and 3 Intensity Levels, Black, Model HX9917/89 - Image 10

Philips Sonicare DiamondClean Smart 9400 Electric Toothbrush, Sonic Toothbrush with App, Pressure Sensor, Brush Head Detection, 4 Brushing Modes and 3 Intensity Levels, Black, Model HX9917/89

£193.05 (as of 03/06/2026 23:25 PST - DetailsProduct prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on Amazon at the time of purchase will apply to the purchase of this product.)

With the same brushing, it’s up to 20 x more effective¹ and provides up to 15 x healthier gums²

SKU: B09BW5SJBD Category:
  • Advanced sonic toothbrush for improved oral health: with the same brushing, it's up to 20 x more effective¹ and provides up to 15 x healthier gums²
  • Personalise your brushing with this innovative electric toothbrush for adults: choose from 4 brushing modes and 3 intensity levels to meet your oral healthcare goals
  • Real-time feedback: the light ring on the end of your handle will flash if you use too much pressure, so you can ease off the pressure and protect your teeth and gums
  • Personalised guidance: connect your toothbrush to the Philips Sonicare app and receive personalised brushing guidance to maintain and improve your brushing habits
  • #1 dental professional-recommended sonic toothbrush brand worldwide³: benefit from Philips expertise to keep your teeth and gums in the best condition
  • The set includes: 1 x DiamondClean Smart 9400 sonic electric toothbrush, 1 x A3 Premium All-in-One brush head, 1 x G3 Premium Gum Care brush head, 1 x charging glass, 1 x USB charging travel case
  • Contains UK 2-Pin bathroom plug for use in bathrooms. Packaging may vary.

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