Worn by: Jessica Chastain as Murphy Cooper
Reference: Hamilton Khaki Field
Brand: Hamilton
Murphy Cooper wears a Hamilton Khaki Field watch throughout the film, which has become one of Hamilton's most impactful and important movie moments. The watch features "Eureka" spelled in Morse code in lacquer on the seconds hand—a tribute to Murph's discovery in the film. Hamilton later created a faithful recreation of the movie watch as the Khaki Field Murph Auto ref. H70605731, a 42mm automatic with 80-hour power reserve, sapphire crystal, and Nivachron balance spring. The modern recreation has become a collector's item for Hamilton enthusiasts and a must-have for fans of the film.

Source: https://www.hamiltonwatch.com/en-us/h70605731-khaki-field-murph-auto.html
Worn by: Matthew McConaughey as Cooper
Reference: Hamilton Khaki Pilot
Brand: Hamilton
Pilot and engineer Cooper wears the Hamilton Khaki Aviation Pilot Day Date Auto, a 42mm watch that captures the look of early aviators and pioneering pilots from the turn of the twentieth century. The watch features a black dial with day-date complications, stainless steel case and bracelet, sapphire crystal with anti-reflective coating, and the H-40 automatic movement with extended 80-hour power reserve—almost double the market standard. Created using modern materials including stainless steel and sapphire crystal, this vintage-inspired timepiece offers a new take on aviation heritage, perfectly suited for a former NASA pilot turned farmer who must save humanity through interstellar travel.

Source: https://www.hamiltonwatch.com/en-us/h64615135-khaki-aviation-pilot-day-date-auto.html