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  1. Home
  2. /Electric Toothbrushes
  3. /Oral-b
  4. /iO Series 9 Rechargeable Electric Toothbrush - Black Onyx
Electric ToothbrushesOral-b🏆 #1 in Electric Toothbrushes

Oral-b iO Series 9 Rechargeable Electric Toothbrush - Black Onyx

6.8

VersusMatrix

out of 10

14hrs
Battery

Where to Buy

ebay

from $205

Buy →

amazon

from $205

Buy →

Prices may vary · We may earn a commission. Learn more

Score Breakdown

PricePriceSpeedSpeedModesModesBatteryBattery
Top 5% SpeedTop 19% ModesTop 30% Battery
Price
9.3
Speed
10.0
Battery
1.2
Modes
5.6

Oral-b iO Series 9 Rechargeable Electric Toothbrush - Black Onyx — Full Specifications

Price (USD)
$205

See a missing or incorrect spec? Let us know

About the Oral-b iO Series 9 Rechargeable Electric Toothbrush - Black Onyx

The Oral-B iO Series 9 Rechargeable Electric Toothbrush in Black Onyx combines sleek design with advanced technology for an elevated oral care experience. Its modern, ergonomic shape fits comfortably in your hand, while the elegant black finish adds a touch of sophistication to your bathroom counter. The interactive color display provides real-time feedback on your brushing habits, ensuring you achieve optimal results every time.

Performance-wise, the iO Series 9 boasts a powerful motor that delivers up to 100,000 brush strokes per minute, effectively removing plaque and promoting healthier gums. With its AI-driven Smart Pressure Sensor, the toothbrush alerts you when you’re brushing too hard or too softly, helping you maintain the perfect pressure for effective cleaning. The device features seven personalized brushing modes, catering to various needs, from sensitive teeth to gum care. Additionally, the built-in timer encourages a thorough two-minute brushing routine.

Despite its impressive features, the Oral-B iO Series 9 has received an overall score of 6.8/10, indicating that while it excels in design and technology, some users may find it less effective than expected. Nevertheless, it remains a strong contender in the electric toothbrush market for those seeking innovation and style in their daily dental care routine.

Who Should Buy This?

The Oral-B iO Series 9 Rechargeable Electric Toothbrush - Black Onyx is perfect for health-conscious individuals, professionals, and anyone seeking an exceptional oral care experience. Its outstanding performance ensures a thorough clean, making it ideal for those who prioritize dental hygiene. However, potential buyers should be aware of its high price point and subpar battery life, which may require frequent charging. This toothbrush is best suited for users who value quality over convenience and are willing to invest in their oral health.

Reviewed by VersusMatrix Editorial Team

Last updated: April 13, 2026

Editorial guidelines

Methodology: AI-powered analysis of technical specifications from manufacturer data. Scores are calculated by comparing products across multiple dimensions and normalized relative to the full category database. Our editorial process is independent and not influenced by affiliate partnerships.

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Frequently Asked Questions

Is the Oral-b iO Series 9 Rechargeable Electric Toothbrush - Black Onyx worth buying in 2026?

The Oral-B iO Series 9 Rechargeable Electric Toothbrush in Black Onyx combines sleek design with advanced technology for an elevated oral care experience. Its modern, ergonomic shape fits comfortably in your hand, while the elegant black finish adds a touch of sophistication to your bathroom counter...

How long does the Oral-b iO Series 9 Rechargeable Electric Toothbrush - Black Onyx battery last?

The Oral-b iO Series 9 Rechargeable Electric Toothbrush - Black Onyx offers up to 14 hours of battery life.

What is the price of the Oral-b iO Series 9 Rechargeable Electric Toothbrush - Black Onyx?

The Oral-b iO Series 9 Rechargeable Electric Toothbrush - Black Onyx is priced at approximately $205. Check the buy links above for current prices from retailers.

Who should buy the Oral-b iO Series 9 Rechargeable Electric Toothbrush - Black Onyx?

The Oral-B iO Series 9 Rechargeable Electric Toothbrush - Black Onyx is perfect for health-conscious individuals, professionals, and anyone seeking an exceptional oral care experience. Its outstanding performance ensures a thorough clean, making it ideal for those who prioritize dental hygiene. However, potential buyers should be aware of its high price point and subpar battery life, which may require frequent charging. This toothbrush is best suited for users who value quality over convenience and are willing to invest in their oral health.

Popular Comparisons

VersusMatrix Score

6.8

out of 10

$ Price
25%9.3
Speed
30%10.0
Battery
25%1.2
Modes
20%5.6

How We Score

Scores are calculated by comparing all electric toothbrushes in our database. Each dimension is weighted and normalized relative to the category.

$ Price25%

Based on Price (USD) · lower is better

Speed30%

Based on strokes_per_min

Battery25%

Based on Battery Life (hrs)

Modes20%

Based on mode_count

Products missing data for a dimension receive the median score. Overall = weighted sum of all dimensions.

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