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I just received two watches that are identical except that they seem to be made a year apart (1995 and 1996). Both SHC divers (the only real difference is the inside of the caseback on one is stamped Singapore, and the other is stamped Japan). The lume on one is still fairly and uniformly bright on the dial, hands, and bezel pip. The lume on the other is completey shot (as in, completely).
Which got me thinking....what causes lume to go bad over time? The gadget person in me wants to think that, like rechargeable batteries, they're only good for so many cycles of recharge/discharge. But I'm not really sure this is true. So, I thought I'd throw it out to the (more knowlegeable) masses!
(On a side note....is completely shot lume on a watch from 1995 any cause for worry?)
Which got me thinking....what causes lume to go bad over time? The gadget person in me wants to think that, like rechargeable batteries, they're only good for so many cycles of recharge/discharge. But I'm not really sure this is true. So, I thought I'd throw it out to the (more knowlegeable) masses!
(On a side note....is completely shot lume on a watch from 1995 any cause for worry?)