Reine de Naples Jour/Nuit 8999
8999BB/8D/974 DD0D
- Movement 78CS
- Shape Ovoid
- Material 18K white gold
- Number of components 247
- Winding Automatic
Delicate diamond setting completes this watch whose mechanism brings to life the interplay between the sun and moon.
Breguet’s mechanical expertise is evident in this watch, equipped with a movement exclusive to the Reine de Naples collection. It displays the hours and minutes, but above all it powers a second part of the dial dedicated to the poetic representation of the times of the day and night.
Timepiece Architecture
Movement 78CS
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Balance wheel
Breguet
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Power reserve
57 hours
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Thickness
5 mm
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Frequency
3.5 Hz
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Width
22 mm
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Number of components
247
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Winding
Automatic
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Balance spring
Flat silicon balance spring
Day/night indication
The day/night indicator distinguishes daytime and night-time hours on the dial. Both functional and visual, it notably accompanies 24-hour displays or complications related to time zones.
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.
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.
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