Classique Tourbillon Extra-Plat 5377
5377PT/12/9WU
Classique Tourbillon Extra-Plat 5377
5377BR/12/9WU
- Movement 581 DR
- Diameter 41 mm
- Shape Round
- Material Platinum
- Number of components 369
- Winding Automatic winding
- Movement 581 DR
- Diameter 41 mm
- Shape Round
- Material 18K rose gold
- Number of components 369
- Winding Automatic winding
This model integrates the slimmest Breguet automatic Tourbillon movement. On its exquisite guilloché dial, we discover the Maison’s traditional hands
The off-centred tourbillon has a light titanium cage that carrys a Breguet silicon balance spring. Moreover, the escapement has been created especially for this piece. These technical characteristics enable the balance spring to reach a frequency of 4 Hz, a high frequency for a Tourbillon balance spring. However, the power reserve has not been sacrificed, thanks to the patented high-energy barrel. The model 5377 has a power reserve of 80 hours. To be able to fit a 3 mm movement in a 7.1 mm case, Breguet developed a platinum oscillating weight located on the periphery of the calibre.
Timepiece Architecture
Movement 581 DR
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Balance wheel
Breguet
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Power reserve
80 hours
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Thickness
3 mm
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Frequency
4 Hz
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Width
37 mm
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Number of components
369
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Winding
Automatic winding
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Balance spring
Flat silicon balance spring
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Diameter
41 mm
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Width of lugs
21 mm
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Thickness
7.1 mm
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Water resistance
3 BAR
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Shape
Round
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Material
18K rose gold
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Type of crown
Non-screwed crown
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Caseback
Sapphire case back
Seconds display
The seconds display makes it possible to follow the passage of time with precision. Depending on the construction of the movement, it may take the form of a central seconds hand or an off-centred small seconds display, integrated into the architecture of the dial.
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.
Tourbillon
Invented by Abraham-Louis Breguet in 1801, the tourbillon is designed to compensate for the effects of gravity on the regulating organ. By placing the escapement and the balance wheel in a mobile cage, it remains one of the House’s most emblematic complications.
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.
Hand engraving
Hand engraving consists in incising the material using traditional tools to create decorations, inscriptions or motifs. Each gesture calls upon the artisan’s expertise and gives the piece a unique character.
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.
Polishing
Mirror polishing consists in working the surface until a perfectly smooth and brilliant reflection is obtained. This finish requires great regularity in order to reveal the material without distorting the angles or volumes of the component.
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