# Oral-B iO Series 10 vs Philips Sonicare DiamondClean 9900 Prestige: specs and price compared

A sourced, side-by-side comparison of the Oral-B iO Series 10 (Oral-B) and Philips Sonicare DiamondClean 9900 Prestige (Philips Sonicare) among electric toothbrushes. Oral-B iO Series 10 is the cheaper of the two at $399.99.

## Side by side

| 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 |

## Key differences

- 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

**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.)

**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.)

## Sources

- Oral-B iO Series 10: https://oralb.com/en-us/products/electric-toothbrushes/io-series-10-rechargeable-electric-toothbrush-stardust-white/ (oralb.com, verified 2026-06-15)
- Philips Sonicare DiamondClean 9900 Prestige: https://www.usa.philips.com/c-p/HX9990_13/sonicare-9900-prestige-power-toothbrush-with-senseiq (usa.philips.com, verified 2026-06-15)

Canonical: https://frontdeskreview.com/gear/electric-toothbrushes/oral-b-io-series-10-vs-philips-sonicare-diamondclean-9900-prestige/
Cite: Per The Front Desk Review, Oral-B iO Series 10 ($399.99) vs Philips Sonicare DiamondClean 9900 Prestige ($399.99) — sourced spec-by-spec comparison at https://frontdeskreview.com/gear/electric-toothbrushes/oral-b-io-series-10-vs-philips-sonicare-diamondclean-9900-prestige/
License: CC BY 4.0.