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This is a genuine Soprod A10 movement winding stem for the A10/A10-2 automatic caliber, Swiss made. It connects the crown to the keyless works for manual winding and time setting functions. This product is brand new and original, typically requiring cutting to case length during installation by a qualified watchmaker.
Compatible Movements：Soprod A10, A10-2
Origin：Swiss Made
1. Is this winding stem an original Soprod genuine part?
Yes. It is an original Soprod factory part, Swiss made, designed for A10/A10-2 calibers.
2. Which movements is this stem compatible with?
It fits Soprod A10 and A10-2 automatic calibers, which share the same dimensions as ETA 2892. The A10 is used in watches from Sinn, Corum, Eterna, and other brands.
3. Does the stem need to be cut during installation?
Yes. The stem is supplied at a general length and must be cut to fit the specific case length before attaching the crown. Insert the square end into the keyless works to ensure proper engagement. This should be performed by a qualified watchmaker.
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