This movement enables the watch to receive GPS signals from the Global Positioning System satellites. That signal sends the precise time and date to the watch based on the location of the wearer and information from the atomic clock which is accurate within 1 sec every 100,000 or so yrs.
7X52A
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Thank you, Arash. Listing updated.
Active Caliber Listings
Tengo un mondaine big date que al cambiarle la batería dejo de funcionar la verdad…
My apologies, I missed that somehow.
Hi Gary L, you are correct. Please see the SW300-1 here and the SW330-1 here.
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As far as I know, this caliber was produced in the mid-eighties to the mid-nineties