Breitling Breitling - M78367101B1S1 Chronospace Military Blacksteel / Volcano Black / Rubber / Folding

Chronospace Military Blacksteel / Volcano Black / Rubber / Folding

REF. M78367101B1S1

9/10

Exceptionally rare

Case

MaterialStainless Steel

Diameter46 mm

Lug width24 mm

ShapeRound

CrystalSapphire

Case backClosed

Water resistance50 m

Dial

ColourBlack

IndexesMixed Hands: Stick

HandsStick

Movement

CaliberCaliber 78

Typequartz

Explore caliber→

In Context

At 46 mm it is a large watch — well above this catalogue’s 40 mm median, and enough to dominate a narrow wrist. At 15.6 mm it is a tall case, and it will catch on a cuff. The case back is closed, so the movement stays out of sight, and the sapphire crystal will resist everything short of deliberate abuse. 50 m covers rain and hand-washing comfortably; it is not a watch to swim in.

It is quartz, so it will hold time far more closely than any mechanical watch here, and asks for a battery every few years rather than a service.

M78367101B1S1 stands on its own in this catalogue — no other reference here shares its base number. It pairs a black dial with a stainless steel case.

Inside: Caliber Caliber 78

Explore this caliber →

The Caliber 78 is the SuperQuartz analogue-digital movement of the Chronospace and the Airwolf, built on ETA's Thermoline base and certified by the COSC. It powers 37 watches in this library. Two liquid-crystal displays sit above and below the hands and carry the functions: a chronograph, an alarm, a countdown timer, a second time zone and a perpetual calendar, selected and set from the crown. Thermocompensation corrects the quartz oscillator against temperature, holding the movement to a few seconds a year rather than a few a month, which is the accuracy the chronometer certificate requires. The movement is 22 mm across with 7 jewels. In the library it sits under 22 Chronospace references, including the Chronospace Military of 2012 in black steel, and 15 Airwolf references from the mid-2000s. Cases run from 43.5 mm to 48 mm, with the 48 mm Chronospace at 16 references and the 44 mm Airwolf at 11. The [Caliber 79](/calibers/breitling-caliber-79) is the equivalent movement in the Aerospace, and the [B71](/calibers/breitling-caliber-b71), [Caliber 77](/calibers/breitling-caliber-77) and [B74](/calibers/breitling-caliber-b74) the three-hand SuperQuartz calibers in the rest of the range.

36 other watches in the library run the Breitling Caliber 78.