The technical refinements of the
Portuguese Chronograph
Your IWC watch shows you the time in hours, minutes and
seconds. You can use the integrated chronograph to
measure any period of time in seconds and minutes. Stop
times can be added together. The mechanical movement
with automatic winding has 31 jewels (synthetic rubies)
and a power reserve of approximately 44 hours when fully
wound. Your watch is protected by a convex sapphire
glass of hardness grade 9 on Mohs’ scale and is water-
resistant 3 bar. To ensure that this extraordinary watch
continues to perform faultlessly in the future, it is essential
to observe a few important operating instructions.
Summary of Contents for portuguese 3714
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