De Bethune DB2115

Advanced hand-wound caliber used in the DB28 collection, particularly the ultra-thin DB28XP. Features De Bethune's signature innovations including self-regulating twin barrels providing 6-day power reserve, titanium balance wheel with white gold inserts (patented 2016), De Bethune balance spring with flat terminal curve (patented 2006), silicon escape wheel, and triple pare-chute shock-absorbing system (innovation 2005). Multiple versions exist (V6, V7, V11, V12) with varying component counts (194-293 parts) depending on complications and finishing. Hand-crafted finishing includes microlight decoration centered on the visible balance wheel.