The nylon military strap has been standard field watch equipment since the 1960s. The nylon-and-leather strap configuration leans into outdoor use, with earth-tone dials suited to time away from pavement. The khaki green (HDB008) reads as a straightforward field watch; the brown (HDB009) is warmer, closer to a vintage military dial. Both run the 4R36 automatic at 41 hours of power reserve inside a 41mm stainless case, with a rotating compass bezel, LumiBrite indices, and a see-through caseback. Water resistance is 330 feet.