Marathon WW194003SS-0001 36mm SSGPM Standard-Issue Officer's Mechanical US Govt Markings

Commonly known as the Officer's Field Watch Mechanical (OFM) or Stainless Steel General Purpose Mechanical (GPM-SS).

Marathon's Officer's Watch features a case diameter of 36mm, a thickness of 11mm, and 16mm lug width, making it perfect size for everyday wear. Comes on a Black Ballistic Nylon strap.

Movement: Automatic

Caliber: Sellita SW210-1 with Incabloc Shock Absorber

Jewels: 18

Scale Quantity: 2

Scale Range: 1–12 (13–24)

Crystal: Sapphire

Crown Type: Pressure

Case Material: 316L Stainless Steel

Case Finish: Parkerized

Luminous Features: Tritium Gas Tubes

Water Resistance: 5 ATM

Functions:

• Dual scale time display (1–12 / 13–24)
• Tritium gas tube illumination
• Shock absorber (Incabloc)
• Water resistant to 5 ATM