59% under what the other stores charge
Compared across 8 stores. Prices are checked against each store and labelled with when. Store links may earn us a commission.
It checks today's price at every store, compares the alternatives and answers in about a minute.
The DiamondClean Smart 9400 is Philips Sonicare's top-tier sonic toothbrush, with five cleaning modes, three intensity levels and Bluetooth that pairs with the Sonicare app for guided brushing and coaching. It runs at 62,000 bristle movements per minute and uses a lithium-ion battery rated for long stretches between charges. It suits people who want the most features Sonicare offers and will use the app; simpler Sonicare models clean well for less but lack the coaching, intensity control and brush-head tracking. Owners generally rate the cleaning and the premium feel highly, while some find the app optional and the brush head costs a running expense.
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Availability unknownSold by brothersbuyandsell (99.7% positive, 286 ratings)Returns: Set by the eBay seller; the eBay Money Back Guarantee covers an item that doesn't arrive or isn't as described.
Availability unknownSold by heverdiesel (90.9% positive, 67 ratings)Returns: Set by the eBay seller; the eBay Money Back Guarantee covers an item that doesn't arrive or isn't as described.
Store links may earn us a commission. Some prices via Klarna.
Lowest price we've seen: $184.99 on Nov 15 at Ultra Brite Smiles. Tracked across 6 stores since Nov 15.
Reviewers and owners rate the cleaning performance and premium finish highly, and many like the app's guidance on coverage and pressure. Common complaints center on the cost of replacement heads and on features they rarely use.
The Philips Sonicare DiamondClean Smart 9400 is a sonic electric toothbrush in black. It delivers 62,000 bristle movements per minute and has 5 cleaning modes with 3 intensity settings.
It connects by Bluetooth. It runs on a Li-ion battery rated for 336 hours of battery life.
