Year: 1981
Reference: 22721 10181
Model: Sprite Calendar (Water Resistant)
Movement: m101
Lug Width: 16mm (Drilled)
Complication: Manual wind. Sweeping seconds hand. Calendar (Date)
Special Features: Field/military style markers. Red seconds hand. Drilled lugs. Trapezoid date window with corresponding outline.
Despite what you might read on eBay and other online sources this vintage Timex watch was never issued by the military. As a result, it is more of a field watch.