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Oral-B
Oral-B iO Series 9 Electric Toothbrush with 3 Replacement Brush Heads, Black Onyx iO9 Power Handle Blackonyx
4.3
Based on 7,861 reviewsReal-World Testing
30 days of real-world testing
Technical Specifications
Complete product details
- Product Dimensions
- 7.01 x 3.94 x 9.96 inches; 1.39 Pounds
- Item model number
- iO M9.4B2.2A
- Batteries
- 1 Lithium Ion batteries required. (included)
- UPC
- 069055128909
- Manufacturer
- Procter & Gamble
- ASIN
- B088CK6XJ4
- Best Sellers Rank
- See Top 100 in Health & Household
- Brand
- Oral-B
- Age Range (Description)
- Adult
- Special Feature
- Bluetooth Connectivity, Brushing Timer, Pressure Sensor, Rechargeable, Travel Size
- Power Source
- Battery Powered
- Item Firmness Description
- Hard
- GTIN
- 069055128909
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About the Author
Expert analysis by Rafael Corrin
Rafael Corrin
Expert ReviewerContributing Writer
Based in Austin, Rafael reviews smart displays and automation apps for Review Atlas. He favors routines that actually save taps and time and keeps a sharp eye on privacy controls.
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View Full ProfileHow We Tested This Product
Our rigorous, independent testing process
Testing Period
30 days
Tested By
Rafael Corrin
Our Testing Process
- We purchase all products at full retail price to ensure unbiased testing
- Products are tested in real-world conditions matching everyday use
- Our experts conduct both objective measurements and subjective evaluations
- Reviews are regularly updated as new products enter the market
- Tested according to our Toothbrushes & Accessories testing methodology
Last updated: November 17, 2025
|Independently tested and reviewed