Oral-B Rechargeable Electric Toothbrush, iO Series 9 Genius, Black, 4 Replacement Brush Heads, Power Charging Travel Case, Teeth Whitening, Visible Pressure Sensor to Protect Gums, 7 Modes
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Availability:
Only 3 left in stock, order soon!
Arrives
Saturday, Sep 19
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Color: Blackonyx
Size: 1 Count (Pack of 1)
Style: iO9 Power Handle
Features
- #1 Dentist recommended Oral B io: This Oral-B Braun electric toothbrush removes up to 100 %* more plaque in just 1 week; clinically proven to remove up to 4x more along your sensitive gumline versus a regular manual toothbrush
- Whiter Teeth, Healthier Gums: Achieve noticeably whiter teeth from day 1; compatible with oral b io replacement round-brush heads; this smart oral care device ensures comprehensive cleaning and promotes superior gum health
- AI-Powered Guidance: Maximize your brushing coverage with innovative A.I. position detection, tracking exactly where you brush across all three tooth surfaces; join 8 out of 10 people who became better brushers with our magnetic drive system
- Intelligent gum pressure protection: Safeguard your gums and enamel from aggressive brushing with the visible pressure sensor that illuminates red when too much force is applied; gentle micro-vibrations ensure a comfortable yet effective clean
- Smartest interactive display: Experience our ultimate rechargeable toothbrush; features 7 cleaning modes and a colored display to track your time; built-in quadrant timer ensures a complete clean that standard manual toothbrushes cannot match
- 4 brush heads and travel case: Includes a premium charging travel case and 4 oral b replacement heads; replace your brush head every 3 months** for our best clean; switch carefree with a 30-day money-back satisfaction guarantee policy
- *vs. a regular manual toothbrush
- **vs. one 3 months old; research with a flat trim toothbrush
- ***for purchase
Description
The Oral-B iO Series Rechargeable Toothbrush combines powerful, but gentle micro-vibrations with Oral-B's unique dentist-inspired round brush head design for a professional clean feeling every day. The Smart Pressure Sensor helps to keep you from brushing too hard to protect your gums and enamel. 3D Teeth Tracking and AI Recognition use an interactive color display to help guide you to your best clean for all areas of the mouth. A 2-minute quadrant timer comes built-in that pulsates every 30 seconds, ensuring a complete clean. The frictionless, smooth magnetic drive system transfers energy to the bristle tips for a clean that wows. Replace your Oral-B iO Series Replacement Brush Heads every 3 months for best results.
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)
Date First Available : August 25, 2020
Manufacturer : Procter & Gamble
Best Sellers Rank: #17,183 in Health & Household (See Top 100 in Health & Household) #113 in Electric Toothbrush Replacement Brush Heads
#113 in Electric Toothbrush Replacement Brush Heads:
Customer Reviews: 4.4 4.4 out of 5 stars (8,146)
Brand Name: Oral-B
Age Range Description: Adult
Included Components: Timer
Model Name: iO Series 8 Electric Toothbrush with 2 Replacement Brush Heads
Target Audience: Unisex-Adults
Package Type Name: Box
Global Trade Identification Number: 09
Manufacturer: Procter & Gamble
UPC: 069055128909
Model Number: iO M9.4B2.2A
Manufacturer Part Number: iO M9.4B2.2A
Other Special Features of the Product: Bluetooth Connectivity, Brushing Timer, Pressure Sensor, Rechargeable, Travel Size
Power Source: Battery Powered
Item Firmness Description: Hard
Toothbrush Head Shape: Round
Operation Mode: Automatic
Number of settings: 7
Reusability: Rechargeable
Mount Motion: Oscillate
Number of Items: 1
Unit Count: 1 Count
Number of Pieces: 4
Item Dimensions: 7.01 x 3.94 x 9.96 inches
Item Weight: 1.4 pounds
Material Features: Reusable
Bristle Material: Nylon
Handle Material: Plastic
Color: Blackonyx
Theme: Oral Care
Frequently asked questions
If you place your order now, the estimated arrival date for this product is:
Saturday, Sep 19
Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.
To initiate a return, please visit our Returns Center.
View our full returns policy here.
To initiate a return, please visit our Returns Center.
View our full returns policy here.
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Similar Products
Top Amazon Reviews
Color: Whitealabaster
Size: 1 Count (Pack of 1)
Style: iO9 Power Handle
My dental hygienist recommended this toothbrush about nine months ago. When I mentioned how expensive it was, she said, “It’s still cheaper than getting a filling.” That changed how I looked at the price, so I went for it. The guided brushing app takes the guesswork out of whether I’m actually brushing everywhere. I used it twice a day in the beginning, which really helped me build better brushing habits. Nine months later, I don’t use the app every time anymore, but I still check in here and there to make sure I’m staying on track. The pressure sensor is also super helpful! My dentist mentioned that many people damage their gums and teeth by brushing too hard, and this makes it very obvious when you’re using too much pressure. I’ve had two dental cleanings since switching, and both were probably the quickest I’ve ever had. My dentist and hygienist said everything looked great with very little cleaning needed and mentioned they commonly see this with patients using an Oral-B iO. The brush heads indicate when they need replacing, which for me has been roughly every three months. They’re about $10 per replacement head, so that’s another ~$40 a year to factor into the cost. Not cheap, but reasonable enough for me considering how well the toothbrush has performed. My only complaint is that it’s can be a bit messy. Even after rinsing the head and shaking off excess water, some water/toothpaste tends to run down the handle once it’s on the charger, so I clean the charging base a couple times a week. It’s definitely an investment, but after nine months of daily use and two great dental checkups, I’m very happy I bought it.
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Reviewed in the United States on August 12, 2026 by Anja Miles
Color: Blackonyx
Size: 1 Count (Pack of 1)
Style: iO9 Power Handle
I've had this now for nearly a year and it's been working well. The built in 2 minute timer with vibrations are great for knowing when to move on from the sections of the mouth. Wish the brush heads would last a little longer but they clean fairly well. Many different settings that you can choose to brush teeth from super sensitive to daily clean or gum care. I do keep my brush on the wireless charger all the time but I've been able to take it on trips without it running out of power, and I bring the travel case just incase but never had to use it. I would recommend this to get your brushing habits fixed if you have a hard time of sticking to the brushing schedule.
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Reviewed in the United States on July 25, 2026 by Brandon Sokolnik
Color: Rosequartz
Size: 1 Count (Pack of 1)
Style: iO9 Power Handle
I'm new to electric toothbrush & it took me a minute to get use to this but once I did, I am very, very happy with it! At first it seemed like it wasn't brushing my teeth with much of the toothpaste (it kept slinging it everywhere in my mouth) but to fix that I manually brush the toothpaste on my teeth (just enough to cover my teeth with it) then turn on the brush. That is the freshest my mouth & teeth feel. It's as if I'm coming out of the dentist every time (& that is a great feeling!). My teeth are WAY cleaner & even stains are nearly gone (I drink a lot of dark drinks). It'll stop/vibrate every 30 seconds to let you know to switch to another side of the mouth. I also love how it tells me if I'm pressing the brush to lightly or to hard on my teeth (the colors will tell you, green is good). The spin is powerful & toothpaste will be slinging out. I always turn it off before I take it out of my mouth because it slings so much. I love the multiple settings you can choose but I always choose the sensitive option. It's not as strong as the daily clean option (daily clean was irritating my gums). The charge lasts a good while. I still use manual brush sometimes & I don't use the Bluetooth stuff so my charge lasts longer. I bought this in December & only had to charge it once. So if you use it more than I do you might need to charge it 2 or 3 times a month. Although I don't travel, I like that it came with a travelling charging case. I just see it as an extra charger in case something happens to my regular one. If you decide to buy I recommend looking at every electric toothbrush from this brand & comparing the cleaning options that are available for each one (I love how this one had a lot to choose from). They made it extremely easy on Amazon for me to compare them. The cleaning options you're interested in might result in a cheaper brush, you might not be interested in multiple cleaning options. Also compare the Bluetooth stuff. I don't care about the extra blue tooth stuff so I got this one which is cheaper. Whichever brush you choose, I'm sure you will not be disappointed. This brand is fantastic & I would definitely buy from them again whenever my brush is done for.
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Reviewed in the United States on January 19, 2025 by Amazon Customer
Color: Blackonyx
Size: 1 Count (Pack of 1)
Style: iO9 Power Handle
Overall Satisfaction: I give the Oral-B iO Series 9 a solid 5. This toothbrush is amazing and well worth the higher cost compared to other series. Main Purpose: I purchased this toothbrush to maintain optimal dental health and minimize the need for extensive dental procedures. Ease of Use: The toothbrush is excellent, and you can even turn on the phone to track your performance. It offers awards for meeting specific goals, some of which can be challenging to achieve. Performance: The Series 9 comes with additional sensors and a flat magnetic mount for convenient charging. While the battery drains quickly, it's not an issue for short 2-3 minute sessions. Features: The ability to visually track cleaning habits is a standout feature. With multiple modes available, I typically use sensitive, whitening, or daily settings. Durability: The toothbrush is very durable, and despite the quick battery drain, it's not problematic for regular use. Value for Money: Although expensive, the toothbrush pays for itself when considering the savings on dental bills, primarily limited to cleanings. Comparisons: Compared to other Oral-B models, the Series 9 is more advanced, with the phone app being the most significant difference. It provides detailed information about brushing habits and areas that need improvement. Pros: Maintain Oral Health: Keep your teeth clean and healthy with advanced features. App Integration: Track your brushing habits and receive feedback on the app. Charging Options: Charge the toothbrush using the magnetic mount or the convenient travel case with an attached cable. Cons: Lack of Apple Watch Compatibility: It would be more convenient if the toothbrush worked with the Apple Watch, eliminating the need to pull out the phone for information. Additional Tips: For a clean toothbrush and to avoid hardened toothpaste, use the travel charger instead of the magnetic mount. Cleaning the head after each use and washing it with water is also recommended. Recommendation: If you're looking for a top-notch toothbrush that not only ensures oral health but also provides insightful data through a dedicated app, the Oral-B iO Series 9 is worth the investment.
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Reviewed in the United States on November 14, 2023 by C. Harvey
Color: Blackonyx
Size: 1 Count (Pack of 1)
Style: iO9 Power Handle
I bought the Oral-B iO Series 9 expecting a premium product. The toothbrush itself has a lot to recommend it, but the charging base has one of the worst design flaws I have encountered in a consumer product. The iO9 is a relatively tall, expensive electronic device, yet while charging it essentially balances upright on a small, shallow magnetic base. There is no meaningful post, socket, collar, or other mechanical support to keep the handle from tipping sideways. Because the handle is so tall, it takes remarkably little lateral force to knock it off the charger. This isn’t a hypothetical concern. I had a previous Oral-B toothbrush fall from its charger and break. With this one, I eventually stopped keeping it conveniently in the bathroom because I didn’t trust the charger to keep it secure. I actually improvised a second magnetic support against the handle when I kept it elsewhere, which dramatically improved its stability. What makes this especially frustrating is that the problem is neither difficult to foresee nor difficult to solve. Competing electric toothbrushes use charging designs that mechanically locate and support the handle. Even a modest post, recess, collar, or other positive restraint could dramatically reduce the chance of an expensive toothbrush being knocked onto a hard bathroom floor. For a flagship toothbrush at this price, this is particularly difficult to excuse. Oral-B put enormous engineering effort into the iO’s display, sensors, pressure detection, Bluetooth connectivity, brushing modes, and app integration. The company should have put comparable thought into the much simpler requirement that the toothbrush remain standing securely while it charges. Prospective buyers should know about this before purchasing because it isn’t something obvious from the feature list. If you buy one, be very careful where you place the charger
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Reviewed in the United States on August 16, 2026 by Michael Smith
Color: Rosequartz
Size: 1 Count (Pack of 1)
Style: iO9 Power Handle
Loved this toothbrush, didn’t use the app. Just found it gave me the best cleaning and most options. I have special needs, which it helped solve. 2021-2026 with a replaced battery last fall. Now it’s finally done and I’m thinking about getting a new one. Price is ridiculous for a toothbrush and for replacement heads. Twice a day use for years. Only get it if you need it.
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Reviewed in the United States on May 18, 2026 by Garrett & Shefali
Color: Aquamarine
Size: 4 Count (Pack of 1)
Style: iO9 Power Handle
The Oral-B iO Series 9 was my first electric toothbrush, and I can confidently say it transformed my oral hygiene. I thought I had been doing a good job with manual brushing, turns out, I was wrong. The "app" integration was another surprise. I initially doubted I’d use it long-term, but it proved incredibly helpful in identifying missed areas and improving my brushing technique. While I’m unsure of the app’s absolute precision, my results have been noticeable, even my dental hygienist commented on the improvement! Now for the downside: battery life. Oral-B advertises over two weeks of battery life with two 2-minute sessions per day, but in reality, that was not even close. My unit barely lasted a week at first and eventually struggled to hold a charge for even two days. Fortunately, the warranty process was excellent—quick and hassle-free. It took exactly one week from return to replacement. That said, my replacement brush isn’t much better in terms of battery life, even after just a month of use. While this is frustrating, the improvements to my dental health outweigh the drawback, and I highly recommend this toothbrush despite the battery issue. If you get one, register it immediately to take advantage of the two-year warranty as you may need it!
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Reviewed in the United States on February 6, 2025 by William D
Color: Blackonyx
Size: 1 Count (Pack of 1)
Style: iO9 Power Handle
and maybe the best brush i’ve ever had as well. i was using oral-b’s io series 5, which is 100% cheaper than the series 9 at the time of this review, for 2 years almost and i really liked it. would say my mouth and teeth have never looked and felt cleaner. i decided to upgrade to the series 9 bc it has gone on sale, and this definitely makes my mouth feel even cleaner than the 5 series. i don’t think you should believe people when they say everything in the io lineup cleans the same, because in my experience the series 9 is superior. i’m not sure which motor sounds more quieter, the 5 or the 9, but it does sound similar to me. for what it’s worth, i heard that the series 10 has the quitest motor out of everything in the lineup. but i will use the series 9 for the next 2 years at least.
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Reviewed in the United States on August 28, 2026 by Joel