Đợt này đang thích tìm hiểu về đồng hồ, nên em đọc được 1 bài này trên WatchUSeek, mời các bác đọc tham khảo:
Thành viên canipus trên watchuseek:
*My low cost Tissot quartz is 28 years old and is still running fine at a few seconds per month accuracy in spite of being a little knocked about and suffering battery changes and servicing every 4 years. It uses a Swiss quality quartz movement with 6 jewels and according to the guy that does the servicing (he has also been servicing Cartier and Rolex for 43 years), the reason its still going is down to
a) the build quality and component selection used in the movement
*b) the 6 jewels added to the movement.
Now he is fully aware of the argument that a quartz watch theoretically does not need jewels because the drive train is not under transverse pressure from a mechanical spring, but he says there is still wear happening due to dust that can get in through the winder stem as my model is not a divers watch and not sealed. The adoption of adding jewels and using regular servicing of cleaning those bearings and oiling is what prevents the movement crapping out.
I expressed surprise but when pushed further on the subject he told me that he has serviced thousands of quartz watches in his span as a watchmaker and without exception all the quartz movements that were non jewelled that have passed through his hands were turned to trash inside 15 years. Those with jewels usually just keep on going. Any likelihood of failure in a jeweled movement due to coil, chip, pcb or quartz will happen within the first couple of years if the components are faulty, (in keeping with the bathtub curve of electronic component failure in consumer products). In short he is saying if the movement is a jeweled, quality Swiss manufacture and is over two years old, it will probably keep going forever with proper servicing at battery change time. When I mentioned that Seiko are not Swiss and have produced quartz movements without jewels he replied that at one time the early Seiko quartz watches used to fail, (although he admitted the failures tended to be in the electronics department not the mechanical bearings and wheels).*
Link: https://www.watchuseek.com/threads/lifespan-of-quartz-movements.175473/#post-1283692
Ý kiến và kinh nghiệm của các bác như thế nào?*