I've got a Fortis and an Android that each are powered by an ETA 2836-2 movement. I think the Fortis is a better grade than the Android (at least I hope so based on the price difference), but essentially the same watch movements. On both of them, the crowns seem to have similar issues in that the crown can change the dates without the crown being pulled out. The Android has a screw down crown, but the Fortis doesn't. So on the Fortis, the day and date will often appear to have changed on their own. Manually wind the watch no longer works and it just changes the date when I try. The Android will do the same but it also gets caught up on the screws for the screw down crown.
Luckily, both of them keep good time, and as long as I keep them in the watch winder (or wear them) to keep the going, I'm fine. But I sure would like to find an easy fix for it.
Any suggestions would be appreciated.