Hamilton Khaki Field Automatic Chronograph Auto Chrono Men's watch 42mm.
I have owned since new. Valjoux (ETA) 7750 movement.
The movement company is owned by the Swatch Group and is part of ETA, and still produces the classic Valjoux 7750 chronograph movement (now called ETA 7750) used by brands such as IWC, Omega, Breitling, TAG Heuer and Chronoswiss. In addition, Valjoux also supplied the movement for early Rolex Daytonas such as 6263.
Very nice big watch. Keeps time perfectly. Comes with original case and box. Extra link included.