Year: 1973
Reference: 23771 2573
Model: Sprite Calendar (Water Resistant)
Movement: m25
Lug width: 16mm
Type: Sports / Dive Watch
Complication: Manual wind. Sweeping seconds hand. Calendar (Date)
Special Features: Blue sector dial. Black elapsed time bezel.

If i call the 23775-02574 RED ALERT, then this vintage Timex watch has to be called BLUE ALERT 😀