Oral-B
Oral-B iO Series 10
$399.99
Released 2023
Best Electric Toothbrushes · head-to-head
Oral-B iO Series 10 vs Philips Sonicare DiamondClean 9900 Prestige
A sourced, side-by-side comparison. Oral-B iO Series 10 is cheaper at $399.99. Every spec and price links to its source.
Philips Sonicare
Philips Sonicare DiamondClean 9900 Prestige
$399.99
Released 2021
Full spec sheet
✓ marks the stronger figure where "more" — or "less", for price and weight — is unambiguously better.
| Spec | Oral-B iO Series 10 | Philips Sonicare DiamondClean 9900 Prestige |
|---|---|---|
| US price | $399.99 | $399.99 |
| Brand | Oral-B | Philips Sonicare |
| Released | 2023 | 2021 |
| Brush action | oscillating-rotating (micro-vibrations) | sonic |
| Cleaning modes | 7 | 5 |
| Battery days | 14 | 14 |
| Pressure sensor | Yes | Yes |
| Smart app | Yes | Yes |
| Smart timer | Yes | Yes |
| Travel case | Yes | Yes |
| Release year | 2023 | 2021 |
Sources — Oral-B iO Series 10: oralb.com (verified 2026-06-15). Philips Sonicare DiamondClean 9900 Prestige: usa.philips.com (verified 2026-06-15).
What's the difference between the Oral-B iO Series 10 and Philips Sonicare DiamondClean 9900 Prestige?
Where the two actually differ on the specs we track (2 of 7). Matching specs are omitted.
- Brush action: Oral-B iO Series 10 oscillating-rotating (micro-vibrations) vs Philips Sonicare DiamondClean 9900 Prestige sonic
- Cleaning modes: Oral-B iO Series 10 7 vs Philips Sonicare DiamondClean 9900 Prestige 5
What reviewers say
Sourced tester consensus for each — the "what people who used it think" layer, not just specs.
Oral-B iO Series 10
Based on one whitelisted hands-on review (TechRadar), which calls the Oral-B iO Series 10 a super-premium oscillating brush delivering a dentist-level clean, with a smart-feedback charging dock, LED pressure ring and a quiet brushless magnetic motor, while flagging a very high up-front price and pricey replacement heads. (1 sourced review, 1 lab-tested.)
Praised: Dentist-level cleaning that leaves teeth feeling smooth and fresh; Smart feedback charging dock and LED pressure ring give useful real-time brushing guidance; Quiet brushless magnetic motor with fast three-hour charging.
Flagged: Very expensive up front; Ongoing replacement brush heads are pricey; Travel case could be larger.
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. (1 sourced review, 1 lab-tested.)
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.