About automatic accuracy
If you are new to automatic watches you may not be aware that generally speaking automatic
watches are not as accurate as their quartz counterparts. Whilst it is possible to fine tune an
automatic watch to within a few seconds per day, the accuracy is largely dependent upon the power
reserve in the watch at any given time. As you will appreciate the power reserve is dictated
largely by the amount of wear and the amount of movement given to each individual watch.
When you first receive your watch it is quite possible that the balance may have been upset during
its’ journey to you, and then may require a settling down period of a few days or so. After a few
weeks of wear you should be in a position to determine how your wearing habits affect the accuracy
of the watch and whether it is within the tolerances specified by ETA and CWL on page 7 of this
manual.
The Power Reserve function
The power reserve indicator is a useful function within the ETA A07.161 movement whereby the
ballbearing disconnecting-gear system relieves tension on the buffer indicator when the spring is
fully wound allowing the user to see what reserves of power the watch actually holds (for more see
page 11 of this manual).
Содержание C90 Beckett's Power Reserve
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