MIL-W-46374
MIL-W-46374 is a specification first published on October 30, 1964,[1] for US military watches.[2] The 46374 was specified as an accurate, disposable watch. In its span, it encompassed metal and plastic cased watches with both mechanical and quartz movements.[2] The 46374 replaced the MIL-W-3818, reducing cost and inheriting the dial from the MIL-W-3818B. These were lower quality watches than the 15 jewel movements, the transition started as US involvement in Vietnam ramped up.[3]
Revision A was released in 1968. Regarding Revision B from 1976, it "added radiation symbols to the dial, indicating that the luminous markers were radioactive, H3 for tritium. Revision D (1986) expanded the scope of the specification to encompass a wider range of watches."[2]
Pilots, divers, and other specialties continue to have military watches available for issue.