My family has both the Braun Oral B electric toothbrush that we have been using for almost 10 years and the newer Oral B iO. As stated in the product description, these replacement toothbrush heads are not compatible with the iO. However, they work with my old, simpler, no-frills electric toothbrush. (Sorry I don't have much info on this toothbrush as we've had it for a long time.) You get three toothbrush heads and each is boxed so you don't have to worry about dust or dirt. if you are going to replace one. I recommend these toothbrush heads because they are Oral B brand and not a third party brand. When it comes to saving money here and there, I just don't feel comfortable choosing something that can be cheaper but also of lower quality. It's hard to know and I'd rather play it safe.
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