In the 1960s, Yema introduced a patented mechanism to the Superman line called a bezel lock. It is a small metal plate with prongs that lock into the uni-directional bezel’s teeth. It secures ...
The Manual on MSN27d
Yema’s latest Superman watches offer improved performance and classic aestheticsAlso giving the watch a retro feel are the 990 feet WR straight-lugs steel case that has a patented bezel-lock mechanism, the ...
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