The Type XXI watch was inspired by the Type XX chronograph designed by Breguet for the Aéronavale française (the French naval air arm) during the 1950s. Its technical distinctiveness lies in a chronograph minutes counter positioned in the centre, like the seconds counter. The self-winding mechanical calibre also has a flyback function, which is specific to aeronautics and allows the chronograph counter to be reset to zero and restarted instantly with a single operation. Introduced in 2011, the new Type XXI has for the first time acquired a grade 2 titanium case with a black lacquered rotating bezel sporting numerals in relief. Its aesthetic was inspired by that of the former Type XX models from the second generation, developed between 1970 and 1984. Its functions include a date, a 24-hour indicator and a small seconds hand. Its case, 42 mm in diameter, is watertight to 100 metres thanks to a screw-locked crown.

Type XXI titanium © Breguet
TYPE XX I – TITANIUM VERSION
SPECIFICATIONS OF THE CHRONOGRAPH
REF. 3810TI/H2/3ZU
Case round, in titanium, with fluted caseband. Rounded lugs. Black unidirectional rotating bezel in polished titanium with raised numerals. Screw-locked crown. 42mm diameter. Water-resistant to 10 bar (100 meters).
Dial matt black and signed Breguet. Luminescent hands and hour-markers. Chapter ring in Breguet Arabic numerals. Day/night indicator at 3 o'clock. 12-hour totalizer and date at 6 o'clock. Small seconds at 9 o'clock. Central minute totalizer.
Movement: self-winding, chronograph, with “flyback” function. Numbered and signed Breguet. Cal. 584Q/1. 13¾ lignes, 25 jewels. 45-hour power reserve. Swiss straight-line lever escapement. Flat balance-spring. Frequency 4Hz. Adjusted in 5 positions.
Strap in calfskin leather.
Also available with a titanium bracelet (Ref: 3810TI/H2/TZ9)
The flyback function: pressing the lower button returns the chronograph to zero and restarts it immediately. Without this function, three separate operations would be necessary to