I notice one of my watches are going way to slow IMHO.
Oupps, that is not good.
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So I take out the tools.
Pull the bracelet off.
Put it in the case opener.
Off with the backcase.
I need some more tools.
Then a little fine adjustment.
At the third try it looks ok but a little low amplitude so maybe it's time for a service anyway.
It will be interesting to see how it runs at the wrist.