De Bethune caliber DB2105V1

Hand-wound movement with a diameter 30 mm and a total of 305 parts – silver plate and barrel bridge cover adorned with "Côtes de Dethune"– hand-snailed barrels – hand-polished, chamfered steel parts - self-regulating twin barrel, De Bethune innovation (2004) - titanium and platinum balance wheel with blom studs, De Bethune patent (2008) - "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)