Compared across 5 stores. Prices are checked against each store and labelled with when. Store links may earn us a commission. Price via Klarna.
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The DiamondClean Smart 9300 is Sonicare's top-tier sonic toothbrush, with four modes (Clean, White+, Gum Health, Deep Clean+), three intensity levels and a light-ring pressure sensor that flashes when you press too hard. It pairs with the Sonicare app over Bluetooth for coaching and tracks brush head wear through BrushSync. It suits people who want guided brushing and gum protection and will use the app; those who just want a simple two-minute clean can get the same 62,000 movements per minute from cheaper Sonicare models. Owners like the clean and the pressure feedback but many find the app fussy and the brush heavy and loud.
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Lowest price we've seen: $199.96 on Nov 14 at Walmart. Tracked across 5 stores since Nov 14.
Ratings average 3.8 out of 5. Owners praise the cleaning power and the pressure sensor, but a notable share complain about app reliability, noise and the handle's weight.
The Philips Sonicare DiamondClean Smart 9300 is a rechargeable sonic electric toothbrush. It cleans with 62,000 bristle movements per minute, pulsing fluid between teeth and along the gumline. The store states it removes up to 20x more plaque than a manual toothbrush, and that it gives up to 15x healthier gums (when used with the A3 brush head) and up to 100% less stains, both compared with a manual toothbrush (in-vitro study, actual results may vary).
It has 4 brushing modes: Clean for daily cleaning, White+ for stain removal, Gum Health for gentle cleaning of the gums, and Deep Clean+ for a thorough clean. There are 3 intensity levels. A built-in light ring pressure sensor signals when you press too hard. QuadPacer and SmarTimer help you reach the recommended 2 minutes of brushing.
Smart Sensor technology and the Philips Sonicare app give personalized feedback and coaching, and show when you have achieved a thorough clean. BrushSync technology signals when it is time to change the brush head. A travel case is included, and the charging glass lets you recharge at home. The battery lasts up to two weeks on a single charge, based on two 2-minute brushings per day on standard mode.
