I had similar run down problems with my Invicta watches in both Swiss and Myota 21J.
There is a guy on Ebay selling winders. I bought the 4 slot a few months ago. They are only $60 incl. $29 for shipping. Needless to say that is another worry, but so far so good.
That's what I thought at first too because that is what the link says. (I had to hand type it, which is really hard for an alcoholic).
However the item number is shortened.
So when I go into E-Bay
it still comes up under the full Item number:
280139940646
Something is fishy. Balmon offered to sell me the IWC because he said he did not like it and bought a Breitling. Whether he bought the Breitling from Popastuey also I don't know.
Some of his previous Timewalker sales have sharp pics.
Something is not right here.