Accuracy according to the watch accuracy app from the playstore : 5 sec fast a day.
this post was submitted on 30 Nov 2024
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These watches need the help of a professional watchmaker. The gears are often not polished and cause issues. The escarpment crystals need proper oiling. There are also not enough crystals to limit the friction. Overall a good cleaning and oiling will go a long way to consistent results but without serious reworking they will never been great time keeping pieces.