Yep good idea, will take it to a watchmaker to regulate it! I'm thinking maybe it lost its accuracy due to shipping and being thrown around most likely.-16s/day is not very handy.
But a problem like this is not unusual for these watches.
Maybe later on you can search a watch maker on this forum and send the watch for a service, the accuracy can be improved.
Bro, it is true that, as you said, the vibration that occurs during transportation can affect the walking error, if you have a high demand for accuracy, and then let the watchmaker adjust itYep good idea, will take it to a watchmaker to regulate it! I'm thinking maybe it lost its accuracy due to shipping and being thrown around most likely.