Oral-B iO Series 4 3794
Good Points
- Very easy to attach and remove brush heads.
- Very comfortable mouth feel with good reach.
- Pressure sensor.
- There is an app that logs brushing, gives some feedback and prompts brush head replacement.
Bad Points
- Fully charged battery only gives six days of use.
- No indication on the brush as to which mode you are in.
- Replacement heads cost $18.74 each.
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