cazalea
[Seiko Moderator]
17137
I asked myself that question and couldn't be sure
So I asked it of Seiko too, and here's Seiko's answer:
How does magnetism affect a watch?
Watches can be adversely affected by magnetism and may gain or lose time. It is important not to leave a watch close to magnetic objects for a long periods. In particular, cell phones, television and PC speakers, magnetic necklaces, handbag clasps, hair-driers, electric razors, magnetic parts of refrigerators are all magnetic.
When your watch is influenced by magnetism, contact the nearest Authorized Seiko Service Center to have the watch demagnetized.
Mechanical:
A mechanical watch affected by magnetism remains magnetized even after removing it from the magnetic source. This may cause a gain or loss of time and will continue to influence its accuracy.
We recommend that you have it demagnetized in order to improve accuracy.
Spring Drive:
Magnetism affects the parts inside the movement, and may cause failure to keep correct time while it is within an extremely strong magnetic field. But magnetism does not affect its accuracy, so keep it away from magnetic sources and correct the time.
Analogue Quartz:
Analog quartz watches utilize the power of magnetic force in order to drive the step motors to move the rotors. These step motors are extremely small and may easily be affected by magnetism, which may impact the rotor. As a result, watches may stop or fail to keep correct time. Magnetism remaining inside of the watch does not affect its accuracy, so keep it away from magnetic sources and correct the time.
In case the watch has been influenced by an extremely strong magnetic force, we recommend that you have it demagnetized.
Digital Quartz:
In general, magnetism has no effect since there are no motors in digital watches.
While Seiko does make "milgauss" watches, I haven't found any Spring Drives that claim to have "magnetic resistance"
To answer your question: no, magnetism does not affect Spring Drive like it does a mechanical watch.
Cheers,
Mike
More posts:
Prompted by Horoplicity's post, here's a Tribute to Eichi
In late 2014, thanks to gracious hosts at Seiko, was able to visit the atelier and observe the painting of these dials, and the assembly of the movements and complete watches. Today I cleaned up, resized and reprocessed these images for Seiko fans. Let's ...
Thanks a lot Michael for sharing the tour....
the dial is impeccable & pure...Eichi II is a timepiece i like and appreciate very much. i've a question if i may - does magnetism affect spring-drive in same way as any mechanical timepiece ? thanks again for sharing pics of this wonderful dial. Best...
I asked myself that question and couldn't be sure
So I asked it of Seiko too, and here's Seiko's answer: How does magnetism affect a watch? Watches can be adversely affected by magnetism and may gain or lose time. It is important not to leave a watch close to magnetic objects for a long periods. In parti...
super thanks Mike !
great detail...i was pondering over this for a while...i also never knew about the 40k a/m. Best, mahesh.,
I was thinking out further...
shouldn't Seiko make this explicit...I was worried of it for long to get a spring drive as I presumed it is much more susceptible to magnetism & airport x-ray machines ! personally I think this movement is underrated & you got me thinking Mike !!
I have had many Spring Drives and never a problem with any of them
My first in 2005 SBGA001 The very first Spring Drive 1999 production - I owned this but foolishly sold it (small and rattly bracelet) Credor Moon Phase Spring Drive; I have owned this since 2006 A Credor on strap with a slightly newer manual wind movement...
