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Does anyone have a comparison of a 7548 accuracy VS a 7549 both divers.

Regards,

Andries Westerbaan
 

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Hello Andreas,
Both calibers are specified to have a monthly loss/gain of less than 15 seconds. Both, however, can be adjusted by a watchmaker with a quartz timing machine (recommended) via a trimmer condenser if necessary. As with most quartz watches, the largest effect on rate is temperature, so the rate will vary depending on what temperatures the watch is most often exposed to.
If you are asking about differences between the two calibers, they are capable of the same accuracy if properly serviced and adjusted with a circuit in good condition.
 
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