Easy and stylish charging - home and away. Brush heads automatically select the optimal settings. Guides you to reduce your scrubbing. Alerts you if you're pressing too hard. Start taking better care of your trouble areas. Make sure you're getting the most from your brush head. Takes you back to any missed spots for 100% coverage. Guides you to brush and highlights missed areas. Choose from 4 modes and 3 intensity settings. Removes up to 10x more plaque for a deep clean.
Easy and stylish charging - home and away. Brush heads automatically select the optimal settings. Guides you to reduce your scrubbing. Alerts you if you're pressing too hard. Start taking better care of your trouble areas. Make sure you're getting the most from your brush head. Takes you back to any missed spots for 100% coverage. Guides you to brush and highlights missed areas. Choose from 4 modes and 3 intensity settings. Removes up to 10x more plaque for a deep clean.
in 3 offers
The lowest price for Philips HX9917/88 Sonic Electric Toothbrush with App right now is $330.60 at Amazon.com.au, compared across 2 retailers.
The all-time low was $282.89 on 19 Dec 2025 — today's price is 17% above the lowest ever. That's a little above the best price we've seen.
Prices last updated 20 July 2026.
Philips HX9917/88 Sonic Electric Toothbrush with App
Easy and stylish charging - home and away. Brush heads automatically select the optimal settings. Guides you to reduce your scrubbing. Alerts you if you're pressing too hard. Start taking better care of your trouble areas. Make sure you're getting the most from your brush head. Takes you back to any missed spots for 100% coverage. Guides you to brush and highlights missed areas. Choose from 4 modes and 3 intensity settings. Removes up to 10x more plaque for a deep clean.
Easy and stylish charging - home and away. Brush heads automatically select the optimal settings. Guides you to reduce your scrubbing. Alerts you if you're pressing too hard. Start taking better care of your trouble areas. Make sure you're getting the most from your brush head. Takes you back to any missed spots for 100% coverage. Guides you to brush and highlights missed areas. Choose from 4 modes and 3 intensity settings. Removes up to 10x more plaque for a deep clean.
Last updated at 20/07/2026 04:37:13
Philips Sonicare DiamondClean 9400 Electric Toothbrush with App HX9917/88, Networked Cleaning, Pressure Sensor, Intelligent Brush Head Detection, 4
Affiliate Disclosure: We may receive a small commission for purchases made through this link at no extra cost to you. This helps support our site. Thank you!
Philips Sonicare DiamondClean Smart 9400 Electric Toothbrush, Sonic Toothbrush with App, Pressure Sensor, Brush Head Detection, 4 Cleaning Modes and
Delivery between 24–28 July $15.52
Philips Sonicare DiamondClean Smart 9400 Electric Toothbrush, Sonic Toothbrush with App, Pressure Sensor, Brush Head Detection, 4 Brushing Modes and
Delivery between 24–28 July $15.52
| Features | |
| Bluetooth | Y |
| Brush shape | Oval |
| Pressure sensor | Y |
| Detachable head | Y |
Philips Sonicare DiamondClean 9400 Electric Toothbrush with App HX9917/88, Networked Cleaning, Pressure Sensor, Intelligent Brush Head Detection, 4
Affiliate Disclosure: We may receive a small commission for purchases made through this link at no extra cost to you. This helps support our site. Thank you!
Philips Sonicare DiamondClean Smart 9400 Electric Toothbrush, Sonic Toothbrush with App, Pressure Sensor, Brush Head Detection, 4 Cleaning Modes and
Delivery between 24–28 July $15.52
Philips Sonicare DiamondClean Smart 9400 Electric Toothbrush, Sonic Toothbrush with App, Pressure Sensor, Brush Head Detection, 4 Brushing Modes and
Delivery between 24–28 July $15.52
| Features | |
| Bluetooth | Y |
| Brush shape | Oval |
| Pressure sensor | Y |
| Detachable head | Y |
