Stellar Clock

Specifications

About this reference

De Bethune clocks are singular in both aesthetic and mechanical terms. In devising them, Denis draws inspiration from legendary 18th and early 19th century object including marine chronometers and sympatique clocks. The creations stem from a blend of research on historical horology and contemporary technical knowledge. Specification: Case · Cabinet: bronze with 18-carat yellow gold outer case – dimensions: height 13 mm – width 8 mm – depth 5.5 mm. 2 sculpted, hand-engraved, patinated gilt bronze sphinxes. Hand-guilloché base front; Case · Crystal: Sapphire crystal (1800 Vickers hardness), with double anti-reflective coating; Case · Case back: Solid; Function: Hours, minutes, moon phase accurate to within 5.7 seconds per lunar cycle, meaning a 1-day difference in 1225 years (a degree of precision 457 times higher than classic moon phases and ten times higher than the De Bethune standard); Calibre · Calibre: DB1318-010; Calibre · Type: Mechanical manual-winding calibre; Calibre · Power reserve: 8 days; Calibre · Number of parts: 180; Calibre · Jewelling: 29 jewels, 21 micro-ball bearings; Calibre · Frequency: 18’000 vibrations per hour; Dial: Concave De Bethune star-studded sky in blued mirror-polished titanium encrusted with white gold stars and diamonds; Dial: Yellow gold hours indicators and rings against a blued titanium background; Dial: Spherical moon-phase indicator in sandblasted steel and flame-blued mirror-polished steel; Dial: Hands:; Dial: Mysterious in hand mirror-polished titanium; Technical features of calibre: Anchor escapement equipped with a system of constant device.