newopenbox Philips Sonicare 9400 DiamondClean SmartSonic electric toothbrush with app, White HX9985/08

new open box, head brush is sealed

Complete System for a Healthier Mouth

Our Best Toothbrush with Smart Sensor Technology

Experience next-level oral care with intelligent sensors that guide your routine. DiamondClean Smart delivers personalized coaching and real-time feedback for optimal brushing every time.

Smarter Brushing, Personalized for You

Personalized coaching via smart technology

Smart brush head sensors for pressure and coverage

Smart brush head recognition automatically selects the best mode

5 brushing modes with 3 intensity levels

All-in-One Brush Head for Complete Care

Clean without compromise using the A3 Premium All-in-One brush head—our most advanced brush head ever. Designed to deliver total care without the need to switch brush heads:

Angled bristles remove up to 20× more plaque, even in hard-to-reach areas*

Triangular tips remove up to 100% more stains in less than two days*

Longer bristles clean deep along the gum line for gums up to 15× healthier in just two weeks

All-in-one performance, every day.

BrushSync™ technology tracks brush head usage and reminds you when it’s time to replace—because brush heads become less effective after three months.

Targeted Gum Care When You Need It

G3 Premium Gum Care Brush Head

Improve gum health with clinically proven performance. The smaller brush head and precision bristles gently clean along the gum line, where gum disease begins.

Up to 100% less gum inflammation**

Up to 7× healthier gums in just two weeks**

Enjoy Long-Lasting Fresh Breath

TongueCare+ Tongue Brush

Remove odor-causing bacteria at the source. The TongueCare+ tongue brush features 240 MicroBristles designed to reach deep into the ridges and grooves of the tongue.

For best results, pair with BreathRx antibacterial tongue spray for superior cleaning and long-lasting freshness.