Watch Specifications:

Stamped on the back of the watch:

WATCH, WRIST NAVIGATORS
MIL-PRF-46374G
6645-01-364-4042
26 MILLICURIES
NRC ID: 54-28526-01E
SP0440-00-D-0168-0005
NOV 2003
CASE 38776

Movement: Swiss quartz hacking movement 
Luminance: Tritium gas-tube luminescence 
Case: Black Fiberglass/composite case
Crystal: Raised acrylic domed crystal 
Strap: Black nylon issue strap

Buckle: Black anodized stainless steel buckle
Water resistance: Water resistant
Dimensions: 44mm diameter, 48mm lug to lug,  20mm lugs
Accuracy: +-60seconds per month

The latest specification genuine military watch made by Marathon Watch Co. As bright a luminous as it can get.

Comes totally 100% NEW IN BOX!

Unopened, unused, unwound and unworn.

Complete with instructions and original packaging.

The new G specification calls for a new standard transition to "PRF"(Performance) specifications. The new specifications ask for a more stringent control on quality and criteria required by the Department of Defense.

The more notable difference in the new specifications is the removal of manufacturer's name and logo and other none relevant text.

Built for the military so be assured of its durability. Self-illuminating Tritium vials used for each hour marker and the hands makes usage in darkness easy. Tritium vials glows in darkness for days. Unlike modern luminous watches.