The SII/TMI/Epson/Hattori caliber VD85 (aka VD85A) quartz movement with 0 jewels. It is made in Japan and may be marketed under different division names within the Seiko conglomerate.
This movement calls for an SR626Sw battery with a run time of up to 3 years on a new cell.
There are similar calibers based on the same VD8 series framework:
At the time of this post, replacement Prices for the VD85A were found online in the range of $21.95 USD to $25.10 USD.
Note: This caliber listing is still being updated, but feel free to start discussions on it in the comments below…
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