OFFICER'S GENERAL PURPOSE MECHANICAL
Marathon General Purpose Field watches are built to strict military standard, MIL-
PRF-46374G, with direct lineage to the legendary GG-W-113 Spec of the 1960s.
These straightforward timepieces are designed for officers and infantry, purposefully
engineered to handle the demands of ground operations.
Commonly known as the Officer's Field Watch Mechanical (OFM) or Stainless Steel
General Purpose Mechanical (GPM-SS). This Swiss-made field watch further harkens
the past with a hand-wind 18 jewel SW210-1 mechanical movement.