blomman Mr Blue
38586
Has nothing to do with trust or Blancpain for that matter....
Yes, pushers are water resistant when the watch leaves the Manufacture.
But if you don't test the water proof each year you risk damage your watch while diving/swimming...
Still even if testing, there might be dust/sand/dirt that gets into the pusher seal and ruins the water proof...
So, if I bought this Blancpain chrono or any other sports chrono, I would try to avoid operating the pushers under water.
Best
Blomman