The highest expression of a Navitimer
A perpetual calendar caliber is a mechanical movement that knows how many days each month has, even on leap years. Knowing that February has 29 days on a leap year may just be one single day, but the mechanical complexity behind it is hard to overstate. The perpetual calendar Caliber B19 incorporates an additional set of components programmed to know exactly when that extra day happens within the four-year cycle. To make things more complicated the five calendar indications: day, date, month, moonphase, and leap year, all advance instantaneously from December 31 to January 1.
The perpetual calendar complication alone is a remarkable achievement, but what makes the B19 especially ambitious is that this highly complex mechanism shares space with a chronograph. A chronograph is already one of watchmaking’s most demanding complications, operating independently from the standard time and responding to user input through start, stop, and reset pushers. The in-house Caliber B19 uses 374 components, yet fits within a case measuring less than 15mm thick, and 43mm in diameter.
Incorporating this caliber into the Navitimer represents the model’s highest expression to date—bringing together technical prowess and Breitling’s most iconic design.
The Story
Case Material
Platinum
Water Resistance
3 bars (30 m /99 ft)
Diameter
43 mm
Thickness
14.94 mm
Power Reserve
Approx. 96 hours
Movement
Caliber
Breitling B19 (Manufacture)
Movement
Self-winding mechanical
Power Reserve
Approx. 96 hours
Chronograph
1/4 second, 30 minutes
Calendar
Day, date, month & moon-phase
Case
Case Material
Platinum
Caseback
Screwed in (sapphire crystal)
Water Resistance
3 bars (30 m /99 ft)
Bezel
Bidirectional, slide rule
Crystal
Cambered sapphire, glareproofed both sides
Dimensions
Diameter
43 mm
Thickness
14.94 mm
Lug Width (in-between lugs)
22.05 mm
Strap
Strap Material
Alligator leather
Strap Colour
Blue
Strap Type
Straight
Lug
22/18 mm
Buckle Material
18k white gold
Buckle Type
Folding clasp
Buckle Size
18 mm
Technical data
Movement
Caliber
Breitling B19 (Manufacture)
Movement
Self-winding mechanical
Power Reserve
Approx. 96 hours
Chronograph
1/4 second, 30 minutes
Calendar
Day, date, month & moon-phase
Case
Case Material
Platinum
Caseback
Screwed in (sapphire crystal)
Water Resistance
3 bars (30 m /99 ft)
Bezel
Bidirectional, slide rule
Crystal
Cambered sapphire, glareproofed both sides
Dimensions
Diameter
43 mm
Thickness
14.94 mm
Lug Width (in-between lugs)
22.05 mm
Strap
Strap Material
Alligator leather
Strap Colour
Blue
Strap Type
Straight
Lug
22/18 mm
Buckle Material
18k white gold
Buckle Type
Folding clasp
Buckle Size
18 mm
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It is the most advanced Navitimer ever made—a 43 mm aviation chronograph that combines Breitling's iconic circular slide rule with a full perpetual calendar and moonphase. It is powered by the in-house Caliber B19, the brand's first perpetual-calendar chronograph movement, originally unveiled for Breitling's 140th anniversary.
This reference pairs a stainless-steel case with a platinum bezel and an ice-blue sunburst dial, bridging the Navitimer heritage with cutting-edge haute horlogerie.
Explore the wider Navitimer collection to discover the full range of models and complications.
The case measures 43 mm in stainless steel, about 14.94 mm thick, topped by a bidirectional notched bezel crafted from platinum that rotates the internal slide rule. The ice-blue sunburst dial carries three multi-scale sub-dials in a 3-6-9 layout to accommodate the calendar indications, a moonphase at 12 o'clock and a white inner slide-rule ring for contrast, with blue accents in place of the usual red. It is delivered on a black alligator strap or a seven-row stainless-steel bracelet, and the B19 movement is visible through a screw-down sapphire caseback.
The B19 is Breitling's first in-house perpetual-calendar chronograph movement, building on the flagship Manufacture Caliber 01 with a column wheel, vertical clutch and an integrated perpetual calendar plus moonphase. It runs at 28,800 vph and offers an impressive 96-hour (four-day) power reserve—particularly useful on a perpetual calendar, where keeping the watch running avoids resetting multiple indications. Its five calendar displays (day, date, month, leap year, and moonphase) jump instantaneously at midnight, and the movement is COSC-certified as a chronometer.