DB28GS Jps

Specifications

About this reference

A nod to the daring age of Formula 1 in the 1970s, but also, and above all to that key period of mechanical and aerodynamic research… De Bethune captures this spirit with the DB28GS JPS. Specification: Case: Black zirconium case middle with “Microlight” decoration, black brushed and polished harden stainless steel caseback and bezel; Case · Diameter: 44 mm; Case · Thickness: 12,80 mm; Case · Lugs: Floating lugs in black brushed harden stainless steel with yellow polished grade 5 titanium insert – De Bethune Patent (2006); Case · Crystal: Sapphire crystal (1800 Vickers hardness), with double anti-reflective coating; Case · Case back: open in black polished harden stainless steel; Function: Hours, Minutes, Seconds, Power reserve indication between 9 and 10 o’clock, Unidirectional rotating bezel, Manual dial lighting; Calibre · Calibre: DB2080; Calibre · Type: Mechanical manual-winding calibre; Calibre · Power reserve: 5 days, ensured by a self-regulating twin barrel, De Bethune Innovation (2004); Calibre · Number of parts: 400; Calibre · Jewelling: 51 jewels; Calibre · Diameter: 30 mm; Calibre · Frequency: 28’800 vibrations per hour; Calibre · Adornment: Mirror- polished grade 5 titanium motion-work bridge; Calibre: Plate and barrel bridge covers in hand-smoothed grade 5 titanium and adorned with “Microlight engraving”; Calibre: De Bethune Innovation (2007); Calibre: Hand-snailed barrels; Calibre: Hand-polished and chamfered steel parts; Dial: Black Satin-brushed grade 5 titanium minutes dial with cut-out Arabic numerals; Dial: Rotating bezel crystal with metallised minutes ring; Dial: Power-reserve indicator between 9 and 10 o’clock; Dial: Hands:; Dial: Black titanium hours and minutes hands with black polished steel insert and second yellow steel insert, luminescent tip; Dial: Polished steel seconds hand with luminescent tip; Technical features of calibre: Titanium balance wheel with white gold inserts, optimised for temperature differences and air penetration , De Bethune Patent (2016); Technical features of calibre: “De Bethune” balance-spring with flat terminal curve, De Bethune Patent (2006); Technical features of calibre: Silicon escape wheel; Technical fea