Perpetual Calendar

Ref: DB25QPAPS2

De Bethune’s interpretation of the perpetual calendar is a captivating masterpiece, seamlessly blending horological finesse with the Manufacture’s cutting-edge mechanics. Housed in a 44mm titanium case, this extraordinary timepiece unites moon phases, a star-studded sky, and a perpetual calendar, embodying both technical brilliance and artistic elegance.

Functions

Hours, Minutes, Spherical Moon Phase and Leap-Year Indicators at 12 o’clock, Perpetual calendar indicating the month at 3 o’clock, the date at 6 o’clock and the day of the week at 9 o’clock

Case

Material

Platinum

Diameter

44 mm

Thickness

11.1 mm

LugS

Ogival lugs

Crystal

Sapphire crystal (1800 Vickers hardness), with double anti-reflective coating

Open back

Open case back in polished platinum
Sapphire crystal (1800 Vickers hardness), with double anti-reflective coating

Calibre DB2324

TYPE

Mechanical manual-winding calibre

POWER RESERVE

6 days, ensured by a self-regulating twin barrel, De Bethune Innovation (2004)

TECHNICAL FEATURES

Titanium balance wheel with white gold inserts, optimised for temperature differences and air penetration , De Bethune Patent (2016)
“De Bethune” balance-spring with flat terminal curve, De Bethune Patent (2006)
Silicon escape wheel
Spherical moon phase indication accurate to a degree of one lunar day every 122 years – De Bethune Patent (2004)
Triple pare-chute shock-absorbing system, De Bethune Innovation (2005)
Optimized oscillating weight in titanium and white gold
Oscillating weight shock-absorbing system, De Bethune Innovation (2006)

Display

DIAL

Rose gold-toned hand-guilloché, with 12 radiating sectors
De Bethune star-studded sky in blued mirror-polished steel, inlaid with rose gold stars
Rose gold-toned curved hour, date and moon phase rings with blue relief Roman numerals
Perpetual calendar apertures indicating the day of the week at 9 o’clock and the month at 3 o’clock – sub dial at 6 o’clock indicating the day of the month – leap year indicated by a gold pastille appearing in the starry sky at 12 o’clock
Spherical moon phase indication in palladium and flamed-blued steel with an accuracy of one lunar day every 122 years at 12 o’clock – De Bethune Patent (2004)

HANDS

Hand-polished flame-blued steel curved hands

Specifications

Watch

Case

Material

Platinum

Diameter

44 mm

Thickness

11,1 mm

Lugs

Ogival lugs

Crystal

Sapphire crystal (1800 Vickers hardness), with double anti-reflective coating

Open back

Open case back in polished platinum
Sapphire crystal (1800 Vickers hardness), with double anti-reflective coating

Display

Dial

Rose gold-toned hand-guilloché, with 12 radiating sectors
De Bethune star-studded sky in blued mirror-polished steel, inlaid with rose gold stars
Rose gold-toned curved hour, date and moon phase rings with blue relief Roman numerals
Perpetual calendar apertures indicating the day of the week at 9 o’clock and the month at 3 o’clock – sub dial at 6 o’clock indicating the day of the month – leap year indicated by a gold pastille appearing in the starry sky at 12 o’clock
Spherical moon phase indication in palladium and flamed-blued steel with an accuracy of one lunar day every 122 years at 12 o’clock – De Bethune Patent (2004)

Hands

Hand-polished flame-blued steel curved hands

Calibre

TYPE

Mechanical manual-winding calibre

POWER RESERVE

6 days, ensured by a self-regulating twin barrel, De Bethune Innovation (2004)

Number of parts

425

Jewelling

47 jewels

Diameter

30 mm

Frequency

28’800 vibrations per hour

Adornment

¾ plate with starry decor, sandblasted and snailed by hand
Balance bridge and oscillating weight arms in blued titanium
White gold oscillating weight hand snailed
Hand-polished, chamfered steel parts

TECHNICAL FEATURES

Titanium balance wheel with white gold inserts, optimised for temperature differences and air penetration , De Bethune Patent (2016)
“De Bethune” balance-spring with flat terminal curve, De Bethune Patent (2006)
Silicon escape wheel
Spherical moon phase indication accurate to a degree of one lunar day every 122 years – De Bethune Patent (2004)
Triple pare-chute shock-absorbing system, De Bethune Innovation (2005)
Optimized oscillating weight in titanium and white gold
Oscillating weight shock-absorbing system, De Bethune Innovation (2006)

Resources

Technical Description

Contact

For any questions, our
team is at your disposal

We are pleased to welcome you to our lounges, thoughtfully designed to immerse you in the heart of the De Bethune universe. More than just spaces for exhibition, each visit offers an invitation to explore and connect. Take the time to admire our collections, engage in conversations about watchmaking, and enjoy a moment of refinement, where every detail is crafted to inspire your passion and enhance your experience.

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