Label given to a watch which has undergone precision tests and received a certificate from an official body (COSC).
Day-Date
Apertures which display both the day of the month (numerical) and the day of the week.
Screw-in crown
Self-locking crown, screwed into the tube of the case, used for highly water resistant divers' watches.
Transparent case back
A transparent case back - frequently made of sapphire - makes it possible to see the movement inside the watch.
Time of Production: 3-5 business days.
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