Tradition Chronographe 7077
7077BB/GY/9XV
Tradition Chronographe 7077
7077BR/G1/9XV
Tradition Chronographe 7077
7077BB/G1/9XV
- Movement 580DR
- Diameter 44 mm
- Shape Round
- Material 18K white gold
- Number of components 420
- Winding Manual winding
- Movement 580DR
- Diameter 44 mm
- Shape Round
- Material 18K rose gold
- Number of components 420
- Winding Manual winding
- Movement 580DR
- Diameter 44 mm
- Shape Round
- Material 18K white gold
- Number of components 420
- Winding Manual winding
This watch features two completely independent gear trains, one for the hours and minutes, the other for the chronograph.
The measurement of short intervals allows for an immediate glimpse of the function requested, but achieving this is a mechanical challenge, as engaging the chronograph can disrupt the proper functioning of the main gear train. The creation of two distinct gear trains solves this problem and provides greater precision to the different displays. In terms of aesthetics, the Tradition 7077 does not deviate from the rule and features an exceptional level of symmetry. The indicator to start the chronograph is located at 6 o’clock. At 2 o’clock and at 10 o’clock, in perfect opposition, retrograde hands indicate, respectively, the watch’s power reserve and the chronograph’s minutes counter, whereas at 4 o’clock and 8 o’clock the two balance-wheels face one another. The one devoted to the watch function operates at a frequency of 3 Hz, whilst the one dedicated to the chronograph operates at 5 Hz, for greater precision.
Timepiece Architecture
Movement 580DR
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Balance wheel
Breguet
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Power reserve
55 hours
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Thickness
7.7 mm
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Frequency
3 ET 5 Hz
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Width
36.2 mm
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Number of components
420
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Winding
Manual winding
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Balance spring
Breguet silicon balance spring
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Diameter
44 mm
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Width of lugs
23 mm
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Thickness
14.1 mm
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Water resistance
3 BAR
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Shape
Round
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Material
18K white gold
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Type of crown
Non-screwed crown
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Caseback
Sapphire case back
Chronograph
The chronograph makes it possible to measure short intervals of time with precision, independently of the time display. At Breguet, this complication is part of a pursuit of performance, legibility and mechanical reliability.
Power reserve indicator
The power reserve indicator displays the remaining autonomy of the movement before it needs to be wound. It makes it possible to monitor the energy available in the barrel, while adding a direct mechanical reading to the dial.
Bevelling
Bevelling consists in chamfering and then polishing the edges of the movement components. This finish highlights the contours of the parts, catches the light and reveals the precision of the work devoted to the smallest details.
Stretching / dressing
Stretching and dressing prepare or finish metal surfaces through the regular working of the material. These operations create clean, flat and even surfaces, essential both to visual quality and to assembly precision.
Guilloché
Engine-turning engraves regular patterns into the material using a hand-operated lathe. At Breguet, this expertise structures the dial, catches the light and reinforces the legibility of the indications.
Microblasting
Microblasting consists in projecting fine beads onto a metal surface in order to obtain a matte, even and slightly textured finish. This finish softens reflections and enhances the contrasts with polished or satin-finished surfaces.
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