And it was crap. I bought the Philips model, 200 bucks (for a frigging toothbrush… what was I thinking) and the internal brush mount couldn’t handle the vibrations and broke. I took it apart and it was very obvious that the construction would have never been able to hold on
40k vibes (20k full movements) per minute is at the lower end of acceptable (the speed creates the jets between the teeth), but that is great!
Iirc at some point only one company made such motors (with such speeds for such brushes), first only for Phillips.
And it was crap. I bought the Philips model, 200 bucks (for a frigging toothbrush… what was I thinking) and the internal brush mount couldn’t handle the vibrations and broke. I took it apart and it was very obvious that the construction would have never been able to hold on
I have the opposite experience with non-that-brand (that band the only enduring one, and it doesn’t even have lithium batteries).