1. While I can't confirm it cleans my teeth any better than a regular toothbrush, it does encourage me to actually do it and for the recommended duration (two minutes).
A blue light at the bottom lights up every 30 seconds so you know how much longer you need to brush. I used to only brush for like, 40 seconds, because I'm lazy, but now I often make it the recommended full two minutes. Also, brushing just feels more fun with such a weird little gadget.
2. The head's bristles are as gentle as a lamb's touch, and my sensitive gums are grateful.
I have reeeally sensitive gums and it's nice to be able to brush them thoroughly without any pain or swelling. The head has two types of bristles: large blue ones on the outside and more traditional ones on the inside. Together, they work to clean my teeth without tearing up my mouth.
3. The design leaves zero nooks and crannies for mold to creep in, so it feels cleaner than some other electric toothbrushes that tend to get grimy with age.
Foreo says their toothbrush is 35 times more hygienic than regular ones, which sounds pretty appealing. I don't have any way of testing this, but so far, the head is still as fresh as the day I got it. None of the bristles have frayed and it doesn't smell like anything; I'm pretty confident it will last a long time.
4. It keeps a charge for so darn long, I seriously don't have to worry about it.
I have an aversion to things I have to remember to charge. Bluetooth headphones? I don't know her. Wireless computer mice have no place at my desk. But this toothbrush stays charged for an impossibly long time, so I don't have to worry about plugging it in all the time. I can throw it in my suitcase and go on vacation without the charging cord and not even think about it.