Quick answer
If you want essential iO cleaning at the lowest price, choose the iO Series 4. If you prefer a more advanced display and a premium feel, the iO Series 6 offers a smart upgrade without jumping to the top-tier models.
What you gain with the iO Series 6
The iO Series 6 adds an interactive color display that shows you which cleaning mode you're in, your battery level, and a visual timer. That makes it easier to track your brushing without guessing. The Series 4 uses a simpler LED indicator for the same basic info, which works fine but requires a bit more attention.
What you save with the iO Series 4
The iO Series 4 delivers the same iO magnetic drive and round brush head technology as the Series 6, so your cleaning performance is equally effective. The main trade-off is the lack of a full display and fewer brushing modes. If you don't need multiple mode options or a screen, the Series 4 gives you the core iO experience for less.
Trade-offs at a glance
- Display: Series 4: Simple LED indicators. Series 6: Full interactive color display showing mode, battery, timer.
- Brushing modes: Series 4: Fewer modes (standard clean plus a couple of extras). Series 6: More modes including sensitive, whitening, and gum care. Choose Series 6 if you want to customize your brushing intensity.
- Price difference: Series 4 is the entry point for iO technology. Series 6 adds roughly $25 more for the display and extra modes. The price gap is modest, so the decision really comes down to whether you value the display.
Product facts
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iO Series 4 Rechargeable Electric Toothbrush, Blue: This model uses the same iO magnetic drive as higher series but with a simpler LED interface and fewer cleaning modes. You get the same effective cleaning technology without paying for a color screen or extra modes you may not use.
iO Series 4 Rechargeable Electric Toothbrush, Blue
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Oral-B iO Series 6 Electric Toothbrush, Grey Opal: The iO Series 6 includes an interactive color display and additional cleaning modes for a more tailored brushing experience. The display makes it easier to see your mode and timer at a glance, which can help you brush more consistently.
Oral-B iO Series 6 Electric Toothbrush, Grey Opal
Which one fits you?
Best for
- Budget-conscious shoppers who want the core iO cleaning experience
- Users who prefer a simpler interface and don't need multiple brushing modes
Not ideal for
- Someone who wants a full-color display and extra brushing modes for gum care or whitening
