Impressive battery life. I can think that the two different brush modes are either too weak or too strong. I would have liked to have an intermediate position, would have been optimal for most if I may judge. Minus that small visible food residues between the teeth do not disappear, there you have to use a regular toothbrush.
To me, this is a vibrating "polishing machine" and must be combined with either a regular toothbrush or an electric one that "oscillates" in its movement and does not vibrate. One does not replace the other, so regardless, I think everyone should have two different toothbrushes.
Slightly high prices for such a simple product - a maximum of SEK 400 is more reasonable.