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I have this Debert compressor style for about a month, it keeps time well, it has no operating problems,I have only noticed for a few days that it has a charge that does not exceed 12 hours, at the beginning I had not noticed it, and therefore, I wore the watch for 24 hours, even at night,so I took it off my wrist and, after about 12 hours, I found it stopped... it mounts a Miyota 82 series ... why does this happen? ..are we sure that these movements are genuine Japanese and not Chinese clones?...for the rest it works very well

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I have this Debert compressor style for about a month, it keeps time well, it has no operating problems,I have only noticed for a few days that it has a charge that does not exceed 12 hours, at the beginning I had not noticed it, and therefore, I wore the watch for 24 hours, even at night,so I took it off my wrist and, after about 12 hours, I found it stopped... it mounts a Miyota 82 series ... why does this happen? ..are we sure that these movements are genuine Japanese and not Chinese clones?...for the rest it works very well

View attachment 16716387 o
If you were able to identify the movement as a Miyota 82 series, and particularly if it was signed 'Miyota, Japan' then you can be sure that it is a Japanese movement. Being a 'clone' would not explain a 12 hour power-reserve anyway, as that is way too short for any automatic movement.
 

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Discussion Starter · #3 ·
If you were able to identify the movement as a Miyota 82 series, and particularly if it was signed 'Miyota, Japan' then you can be sure that it is a Japanese movement. Being a 'clone' would not explain a 12 hour power-reserve anyway, as that is way too short for any automatic movement.

This is the caseback of my Debert....

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This is the caseback of my Debert....

View attachment 16717459
That is without any doubt a Japanese movement, no better or worse than its nearest Chinese equivalents. And its power-reserve should be about 30 to 36 hours straight off the wrist, or 42 hours if fully hand-wound.
 
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