Best Electric Toothbrushes · head-to-head
Oral-B iO Series 10 vs Philips Sonicare DiamondClean 9900 Prestige
A sourced, side-by-side spec comparison. Oral-B iO Series 10 is cheaper at $399.99. Every spec and price links to its source.
Side by side
| Oral-B iO Series 10 | Philips Sonicare DiamondClean 9900 Prestige | |
|---|---|---|
| US price | $399.99 (MSRP on oralb.com; US retail launch 2023) | $399.99 (MSRP; frequently sold ~$329 at retail) |
| 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 | true | true |
| smart app | true | true |
| smart timer | true | true |
| travel case | true | true |
| 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).