Philips Sonicare · Updated June 2026
Philips Sonicare DiamondClean 9900 Prestige: price, specs & release date
Philips Sonicare DiamondClean 9900 Prestige, released 2021. Every price and spec below is linked to its source and dated — no guesses.
Source: usa.philips.com verified ✓ corroborated verify in ledger
The Philips Sonicare DiamondClean 9900 Prestige is listed at $399.99 on usa.philips.com as of 2026-06-27, the most expensive electric toothbrushes (median $110); other retailers may be lower. It earns a Bronze Deskmark — 4/100 pay-blind standing, #13 of 19 in class.
Verified Jun 27, 2026 · figures linked to their source in the table below
Cheapest electric toothbrushes: AquaSonic Black Series — $39.95
- Best for Remarkably quiet, premium 'executive' design that feels smooth and comfortable in the hand; Real-time feedback that warns on scrubbing and auto-lowers intensity when you press too hard.
- Skip if No handle controls beyond a power button — all mode/intensity changes require the app is a dealbreaker.
Is the Philips Sonicare DiamondClean 9900 Prestige a good buy?
At $400, the Philips Sonicare DiamondClean 9900 Prestige is the most expensive of the 20 electric toothbrushes we track, where the median is $95. On the spec sheet, its cleaning modes of 5 is above the median of the 22, its release year of 2021 is below the median of the 16, and its battery days of 14 is at the median of the 19.
Evidence of Record
Our dataNo independent lab has measured this product yet. 1 outlet has it on record by mention only, with no hands-on measurements published to weigh its claims against — a gap in the evidence, not a verdict on the product.
Review consensus · sourced & dated
What reviewers say about the Philips Sonicare DiamondClean 9900 Prestige
Only one whitelisted tester, TechRadar, published a hands-on review of this exact model. TechRadar calls it a premium, remarkably quiet 'executive' brush with helpful real-time feedback, but flags that every setting lives in the app and that its pressure sensor and location tracking trail the Oral-B iO Series 9.
Based on 1 review · 1 lab-tested · 2021-07-07
Tested by TechRadar
Consistently praised
- Remarkably quiet, premium 'executive' design that feels smooth and comfortable in the hand
- Real-time feedback that warns on scrubbing and auto-lowers intensity when you press too hard
- USB-C rechargeable leather-effect travel case, practical for frequent travellers
Commonly flagged
- No handle controls beyond a power button — all mode/intensity changes require the app
- Pressure sensor and in-app location tracking trail the Oral-B iO Series 9
- Expensive at $399.99 launch price
Where reviewers disagree Only one whitelisted source survived verification, so no cross-source comparison is possible. TechRadar's own verdict is internally mixed: it praises the premium feel and adaptive feedback while noting app-dependence and the high price as real drawbacks.
The sources (1)
The Sonicare 9900 Prestige is remarkably quiet, and the sound fades gently in and out as you turn it on and off.
In our tests, this appeared much less sensitive than the pressure sensor of the Oral-B iO Series 9 (another premium electric toothbrush).
we found that the brush location wasn't quite as accurate as that of the Oral-B iO Series 9.
Specifications
| Price (US) | $399.99 MSRP; frequently sold ~$329 at retail |
|---|---|
| Brand | Philips Sonicare |
| Released | 2021 |
| Brush action | sonic |
| Cleaning modes | 5 |
| Battery days | 14 |
| Pressure sensor | Yes |
| Smart app | Yes |
| Smart timer | Yes |
| Travel case | Yes |
Source: usa.philips.com (verified 2026-06-15) · corroborated by usa.philips.com. 5 modes (Clean, White+, Gum Health, Deep Clean, Sensitive) with 3 intensity levels, up to 14-day battery, pressure sensor (light ring), Connected Sonicare/SenseIQ app, BrushPacer/SmarTimer, and USB Prestige charging travel case all confirmed on Philips product page (fetched). Announced January 11 2021, market availability from April 2021 per Philips press release (fetched, valid; no price in release). MSRP $399.99 per retailer listings.
Is the Philips Sonicare DiamondClean 9900 Prestige worth it vs cheaper electric toothbrushes?
Philips Sonicare DiamondClean 9900 Prestige against its closest cheaper and pricier electric toothbrushes on the specs that matter — every value sourced. See all 20 ranked
| Product | Price | Brush action | Cleaning modes | Battery days | Pressure sensor | Smart app |
|---|---|---|---|---|---|---|
| Philips Sonicare DiamondClean 9900 Prestige this | $399.99 | sonic | 5 | 14 | Yes | Yes |
| Oral-B iO Series 9 | $219.99 | oscillating-rotating (micro-vibrations) | 7 | 14 | Yes | Yes |
Frequently asked questions
What do reviewers say about the Philips Sonicare DiamondClean 9900 Prestige?
Only one whitelisted tester, TechRadar, published a hands-on review of this exact model. TechRadar calls it a premium, remarkably quiet 'executive' brush with helpful real-time feedback, but flags that every setting lives in the app and that its pressure sensor and location tracking trail the Oral-B iO Series 9. Praised: Remarkably quiet, premium 'executive' design that feels smooth and comfortable in the hand; Real-time feedback that warns on scrubbing and auto-lowers intensity when you press too hard; USB-C rechargeable leather-effect travel case, practical for frequent travellers. Flagged: No handle controls beyond a power button — all mode/intensity changes require the app; Pressure sensor and in-app location tracking trail the Oral-B iO Series 9; Expensive at $399.99 launch price. (From 1 tester review, 1 lab-tested.)
How much does the Philips Sonicare DiamondClean 9900 Prestige cost?
The Philips Sonicare DiamondClean 9900 Prestige has a US price of $399.99 (MSRP; frequently sold ~$329 at retail), as of 2026-06-15.
How does the Philips Sonicare DiamondClean 9900 Prestige compare on price?
At $400, the Philips Sonicare DiamondClean 9900 Prestige is the most expensive of the 20 electric toothbrushes we track, where the median is $95.
When was the Philips Sonicare DiamondClean 9900 Prestige released?
The Philips Sonicare DiamondClean 9900 Prestige was released 2021.
What are the Philips Sonicare DiamondClean 9900 Prestige's key specs?
Philips Sonicare DiamondClean 9900 Prestige (Philips Sonicare): brush action sonic, cleaning modes 5, battery days 14, pressure sensor Yes, smart app Yes. Full sourced spec sheet verified 2026-06-15.
Price of record: $399.99 at usa.philips.com, 2026-06-27. Other retailers may be lower — check the current price:
See Philips Sonicare DiamondClean 9900 Prestige on Amazon As an Amazon Associate we earn from qualifying purchases.Similar electric toothbrushes
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Cheaper electric toothbrushes
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