
Yep, the Philips Sonicare DiamondClean Smart 9300 is waterproof.
According to the manufacturer's description, it's designed to be safe for use in the shower.
So, no worries about water damage if you prefer brushing your teeth while showering.
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If you're still curious about the Philips Sonicare DiamondClean 9300, here are some other answers you might find interesting:
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If the Philips Sonicare DiamondClean 9300 doesn't quite fit your needs, here are some other options to consider:

The Oral-B Genius X uses artificial intelligence to enhance your brushing experience, offering personalized feedback and six modes tailored for various needs. Its superior tracking capabilities can elevate your dental care routine compared to the Philips Sonicare DiamondClean.

This device combines brushing and water flossing in one, saving you time while enhancing your oral care routine. Unlike Sonicare, it offers a more comprehensive cleaning by addressing multiple facets of oral hygiene.

Quip offers a simpler, more affordable option with a modern, minimalist design. It promotes good brushing habits with built-in timer and vibration features, perfect for those preferring a lightweight, travel-friendly toothbrush that doesn't compromise on effectiveness.