Breitling Pluton ref. A51037: Navigator-series pilot’s watch from the mid‑1980s–1990s. ~42 mm stainless steel case, rotating bezel with 60‑min scale, mineral crystal, ~100 m WR. Analog/digital multifunction quartz (alarm, chronograph, countdown, dual time, calendar, backlight). Black dial with twin digital windows. Professional bracelet or leather.