37% under what the other stores charge
Compared across 20 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 9900 Prestige is Philips Sonicare's top-tier sonic toothbrush, with SenseIQ sensors that track pressure, motion and coverage up to 100 times per second and coach you through the Sonicare app. It offers five brushing modes, three intensity levels and a visual pressure sensor, and ships with the A3 Premium All-in-One head, a charger base and a Prestige travel case with built-in USB charging. It suits people who want app-guided feedback and the most features Sonicare sells, and it competes with Oral-B's smart iO brushes, which use oscillating-rotating heads and their own app coaching. Owners rate it highly overall, though some find the app and sensor prompts fussy and the brush head costs add up.
In stock
In stock
In stock
In stock
In stock
In stock
In stock
In stockReturn policy
In stock
In stock
In stock
In stock
In stock
In stock
In stock
In stockReturn policy
In stockShips from the UK · priced in GBP (£687.49) · duties may applyReturn policy
Availability unknownSold by bendeals (99.6% positive, 10,200 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 abc.group1 (99.5% positive, 853 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 unknown
As an Amazon Associate, Deal.ai earns from qualifying purchases.
Out of stock
Also available at
Store links may earn us a commission. Some prices via Klarna.
Lowest price we've seen: $276.82 on Nov 15 at Tiny Lux; highest $328.99 on Nov 14. Tracked across 17 stores since Nov 14.
Owners rate the 9900 Prestige highly, praising the clean it delivers and the pressure feedback that curbs hard brushing. Complaints center on the app's prompts and the cost of replacement heads.
The Philips Sonicare DiamondClean 9900 Prestige is a rechargeable electric toothbrush with sonic technology. It moves its bristles 62,000 times per minute and has 5 brushing modes and 3 intensity levels.
SenseIQ technology senses pressure, motion, coverage and more up to 100 times per second. A visual pressure sensor shows how hard you are pressing. The toothbrush works with the Philips Sonicare app for real-time guidance.
It uses the A3 Premium All-in-One brush head, which has angled bristles. A Prestige travel case with integrated USB charging comes with it.
