IMHO,COSC doesn't mean squat to me,I have accurate watches that aren't certified,that have stood up to extreme wear,cold,hot,humid,wet and being jolted from vigorous activity.
I don't think COSC is worth the high premiem, am I correct by saying that the certification is void once the watch is serviced?
I don't think COSC is worth the high premiem, am I correct by saying that the certification is void once the watch is serviced?