1965 Pattern U.S Vietnam War Pattern 20mm Nylon Webbing Military Watch Strap pocket watch ✔ Lightweight Titanium Case✔ Long-Lasting

✔ Lightweight Titanium Case✔ Long-Lasting Swiss Movement✔ Self-Luminous Tritium GTLS for Night Visibility✔ Sapphire Crystal for Maximum Durability

the battery hatch was essential because early quartz watch batteries lasted only about a year

Crown: Screw-down locking crown (316L stainless steel)

but there's now a simpler alternative

1965 Pattern U.S Vietnam War Pattern 20mm Nylon Webbing Military Watch Strap pocket watch ✔ Lightweight Titanium Case✔ Long-LastingSKU: US ORP 20KHKSS Vietnam Era U. S. Military Watch Strap 20mm Khaki These straps were originally manufactured in 1965 and issued in both 16mm and 18mm widths for military watches of the era. They were used on timepieces from brands such as Benrus, Westclox, Hamilton, Bulova, and others. Faithfully reproduced to match the original U. S. military specification MIL S 46383A1 WRIST: INSTRUMENT (June 1965), this strap remains true to the authentic design