The Hamilton Khaki Series Field Auto Chrono is the official timepiece of Tom Clancy’s super spy Jack Ryan, as seen on the binge-worthy Amazon Prime show, on the wrist of John Krasinski. Powered by  a Swiss-made H-21 automatic movement, it features a PVD-coated 42mm stainless steel case on a knurled black rubber strap. It has a 60-hour power reserve and chronograph plus day-date functions.