Modern watches keep getting bigger, but the field watches soldiers actually wore were compact, and they still look right on most wrists. The Marathon GPM in sage green, reference WW194003SG-0103, stays true to that vintage proportion with a 34mm case that suits smaller wrists and anyone who likes a classic fit.

At 34mm across and 41mm lug to lug, the General Purpose Mechanical sits neatly between the lugs of a slim wrist without overhanging, and the 12.5mm case height slides under a shirt cuff. The case is sage green fibreshell composite, light and warm-toned, with a matte black dial that carries no government markings. Tritium on the hands and markers makes it easy to read in the dark, and the 12/24-hour scales keep the military look intact.

Marathon produces the GPM to MIL-PRF-46374G, Type II, Class 4. Its NH35-based automatic movement has 24 jewels and around 41 hours of power reserve, and it can be wound by hand when you pick it up after a break. A green one-piece nylon strap, 10 inches long, fits the scale of the watch and the smaller wrist it was made for.

Marathon GPM Sage Green NGM Overview

• Reference: WW194003SG-0103
• Size: 34mm diameter, 12.5mm thick, 41mm lug to lug
• Case material: sage green composite fibreshell
• Movement: automatic (NH35-based), hand-winding, 24 jewels, ~41-hour reserve
• Water resistance: 3 ATM
• Crystal: sapphire
• Lume: tritium on hands and indices
• Strap: green one-piece nylon, 10", 16mm

Proof that a great field watch does not need to be oversized.