Oral-B iO4 Electric Toothbrush with Timer and Multiple Brush Modes - Slate Blue
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2 Year Electronics Protection Plan ($75-$99.99) - Allstate
$11.00
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Return this item in store within 90 days for a full refund.
WARNING: choking hazard - small parts. Not for children under 3 yrs.
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4.5 out of 5 stars with 599 reviews
ease of use: 4.23 out of 5
quality: 3.37 out of 5
value: 3.19 out of 5
53% would recommend
95 recommendations
2 out of 5 stars
Thumbs down graphic, would not recommend
25 August, 2026Verified purchase
Waste of Money
This unit failed to charge after 8 months of use. Very disappointed.
From Oral-B team
Thank you for sharing your feedback, Irene. We're sorry to hear that your toothbrush stopped charging. Our products are designed to deliver reliable performance and undergo rigorous quality testing, so this is not the experience we want for our consumers. We'd appreciate the opportunity to learn more about your experience and assist you further. Please give us a call at (800) 566-7252, and our team will be happy to help.
3 months ago
5 out of 5 stars
Thumbs up graphic, would recommend
25 April, 2026Verified purchase
Best Electric Toothbrush Ever
Electric toothbrush is thorough oscillates and vibrates for a thorough cleaning. The bristle design is gentle on the gums as u brush the teeth. I am totally impressed. Oh, by the way, I am a retired dentist. Practiced for over 47 years.
1 out of 5 stars
Thumbs down graphic, would not recommend
8 March, 2026Verified purchase
Don't buy
Water and debris get stuck in the openings on the top of the toothbrush (including parts that go in your mouth). After a few weeks I started noticing black pieces coming out when I rinsed it off after brushing - guessing it’s built up mildew/mold from water collecting in those channels.
From Oral-B team
Lisa, we're so sorry to learn your iO 4 has developed a build up, and want to help. Please know that there’s nothing in our toothbrush components that would cause mold before use. Mold requires organic material to grow, which isn’t present in our brushes. While it’s rare, mold can develop after use if the brush is stored in a damp area or comes into contact with certain cleaning agents or soaps that can make the plastic porous. So we can help further, please call us at (800) 566-7252.
8 months ago
5 out of 5 stars
Thumbs up graphic, would recommend
5 February, 2026Verified purchase
Very happy with the iO Series 4 brush!
When our ten-plus year old Oral B toothbrush recently died, we were faced choosing from multiple options. We settled on the iO Series 4. We've had it for a couple of weeks now and ate very pleased! While we aren't as concerned about the Bluetooth capabilities, we wanted a great toothbrush! This takes care of all of our needs. We had to switch brush heads, but feel that these heads, combined with the new base do a great job!
5 out of 5 stars
Thumbs up graphic, would recommend
22 November, 2025Verified purchase
Awesome
Was not expecting what this toothbrush has to offer!! My oral hygiene game changed forever. Highly recommend
1 out of 5 stars
Thumbs down graphic, would not recommend
18 November, 2025Verified purchase
Terrible Mold Issue — Not Worth the Money
The toothbrush develops mold. I tried keeping the brush separate from the base during the day so it could dry, but it still forms black pieces of mold that break off from inside the brush and you can’t clean them out of the base. Even after replacing it with a new brush, the same problem continued. Money wasted.
From Oral-B team
Thank you for sharing this with us, Marcela. Our Oral-B toothbrushes undergo rigorous quality and safety checks to ensure they are safe when used as directed. We're sorry to hear about this recent experience with your iO4. Oral-B iO toothbrushes feature openings in the brush heads to allow water to flush through the brush head tube and let air in, allowing the brush head to dry sufficiently after use and reducing moisture inside. There’s nothing in our toothbrush components that causes mold before use. Mold requires organic material to grow, which isn’t present in our brushes. While it’s rare, mold can develop after use if it's stored in a damp area or comes into contact with cleaning agents or soaps that can make the plastic porous. We recommend continuing to clean the brush head after each use. Your safety and satisfaction are important to us, and we'd like to learn more about your experience with your iO4 and help further. When you have a moment, please give us a call at 1-800-566-7252, 9 am-6 pm EST, Monday-Friday.
1 year ago
5 out of 5 stars
Thumbs up graphic, would recommend
27 October, 2025Verified purchase
Does a Great Job!
This is a good looking, durable toothbrush that does a great job.
5 out of 5 stars
Thumbs up graphic, would recommend
16 October, 2025Verified purchase
(no review title)
my teeth feel cleaner than with a regular brush.
5 out of 5 stars
Thumbs up graphic, would recommend
25 September, 2025Verified purchase
Great toothbrush
Great product! Great and easy to use.
4 out of 5 stars
23 September, 2025
originally posted on Oral-B
Great electric toothbrush
[This review was collected as part of a promotion.] I am amazed that it look me this long enough to try an electric toothbrush. It also connects to an app which can help with timing and certain challenges to complete. The battery life is great! Helps me complete that 2 minute washing teeth instead of rushing in the morning.
1 out of 5 stars
Thumbs down graphic, would not recommend
12 September, 2025Verified purchase
No longer works
I loved it, until it stopped working yesterday. I tried charging it on another toothbrush charger, to see if it was the charger, but it still wouldn’t charge.
From Oral-B team
We are delighted to hear that your Oral-B iO 4 Toothbrush has been an exceptional addition to your oral care routine, and we can understand the frustration with your brush no longer charging. All of our products are thoroughly tested to ensure their performance, so this is not something that we would expect to happen. We appreciate you trying a different charger, and would like to recommend also trying a different outlet, as well as ensuring that the brush is not sitting on a metal surface, as this can interfere with the electromagnetic charger. If these additional tips do not resolve the issue, we would love a chance to further assist you, and encourage you to give our team a call at (800) 566-7252 so we can get you back to your regular brushing routine and gather some information for our Quality Team.
1 year ago
5 out of 5 stars
7 July, 2025
originally posted on Oral-B
Never going back to regular toothbrushes!!!
[This review was collected as part of a promotion.] First used this toothbrush on a trip and I was amazed, I was using another electric toothbrush at that time and I took this one because of the traveling case because it was convenient, and I can say ever since that day I never gone back to the other one. Just amazing, it is in the pricier side but it is worth it. battery last long and it’s just amazing.
5 out of 5 stars
21 June, 2025
originally posted on Oral-B
Game changer
[This review was collected as part of a promotion.] Love this toothbrush! My mouth feels very clean after using, probably my favorite feature is that it will light up red when you are using too much pressure. I had no idea I had been brushing too hard. It gives vibrations to let you know when you have completed your 2 minute brushing session so there’s no guessing involved. Noise level is minimum and it comes with a travel case. In the app you can track your brushing sessions, and it will remind you when it is time to replace the brush head. You can adjust your mode of brushing based on sensitivity which is great. I experienced no gum bleeding as I frequently do with other toothbrushes.
5 out of 5 stars
20 June, 2025
originally posted on Oral-B
Sleek and portable
[This review was collected as part of a promotion.] Really love the black sleek design, the travel case, and that it comes with a charger too. Oral B always has amazing dental products . Highly recommend.
5 out of 5 stars
19 June, 2025
originally posted on Oral-B
Is there such a thing as a “cool” toothbrush?!
[This review was collected as part of a promotion.] If you could consider a toothbrush “cool”, this would be the one! It’s quiet, extremely light & the battery lasts so long. Definitely longer than I thought it would! It certainly gets the job done and i absolutely love that there’s an app to pair it with ! Would be great for those who struggle with self care.
5 out of 5 stars
18 June, 2025
originally posted on Oral-B
Powerful little cleaning tool
[This review was collected as part of a promotion.] It’s my first electric toothbrush however it’s been very effective. The battery is rechargeable, which is great. It makes my teeth feel very clean. The noise is a bit loud, which is not a big deal. It’s also comfortable to hold however, I have a small mouth and for me it’s difficult to utilize it properly
5 out of 5 stars
17 June, 2025
originally posted on Oral-B
Nice Upgrade
[This review was collected as part of a promotion.] Very sleek, modern design. We liked the magnetic snap on head. Battery lasts well and is quiet. Easy to use and affordable option for any family!
5 out of 5 stars
16 June, 2025
originally posted on Oral-B
Impressive
[This review was collected as part of a promotion.] If you're looking for an all-in-one dental care experience, look no further than this stunning Oral-B iO Series 4 rechargable toothbrush. The matte black color is so sleek and modern. The power button helps display the available charge. The Bluetooth connected app was easy to install and configure. It recharges quickly and the battery life is great. My teeth definitely feel super clean compared to my usual manual toothbrush. My only suggestion for improvement is that I wish the kit included at least one replacement brush head.
5 out of 5 stars
14 June, 2025
originally posted on Oral-B
Easy to use
[This review was collected as part of a promotion.] I was curious to try this electric toothbrush, and I'm quite impressed! It is streamlined and doesn't take up a ton of space, and the black color is sleek. The brush size is small but mighty, and I love how you can control how intense of a pressure level you want. It's very easy to use!
5 out of 5 stars
14 June, 2025
originally posted on Oral-B
10/10
[This review was collected as part of a promotion.] I gave to my husband and he is in love with it! Works so good and quiet! Easy to use and cute design! Stays plugged in so we don’t worry about battery life! I think I would purchase one for the price!