It makes a lot of noise compared to the previous electric toothbrushes I had. The battery indeed has a long duration, however, in 1.5 years, the toothbrush stopped working. Very expensive, therefore, for such a short lifespan.

It is very good at cleaning teeth and has a different philosophy from Oral-B, which uses rotational movement. This one uses pulsation.
Unfortunately, this specific model does not display a head replacement indicator for me, even though I have heads compatible with this function. I tried to deactivate and reactivate this function, but it didn't work. So, I change the head every two months on my own.
Secondly, it only has one button for all the functions, which is not practical at all.
The way to change something is to press the one and only button for either 3, 4, or 5 seconds (I don't remember exactly) depending on what you want to activate/deactivate. You have to check the instructions first...
They could have added an extra button considering the price of the toothbrush.
The equivalent expensive model from Oral-B that I have is much more practical than this one. It has one on/off button and another one for the programs.
The replacement heads are quite expensive, so it's worth looking for deals before purchasing them.
The battery lasts a long time, no problem there.
It automatically turns off after 2 minutes of use. I would prefer it to simply vibrate at 2 minutes so that you know they have passed, but without stopping, because usually in 2 minutes you don't have enough time to properly clean all your teeth. (Oral-B does this, that's why I'm making the comparison)
Overall, I am satisfied with its cleaning performance, which is why I give it 4 stars.

Very good toothbrush. The more expensive models mainly offer travel cases and a more impressive design, but in terms of functionality - teeth cleaning - they are similar.

It works quite differently from Oral-B, with vibration instead of rotation. It is a matter of personal preference what someone will choose. I will not go back to Oral-B rotary brushes.

Tremendous feeling of cleanliness after each brushing.