Piaget's ultra-thin movements combined with the highest technical precision take on the challenge of all the complexity behind a skeleton mechanism. True strength of purpose is required to achieve the minimalist thinness of the 838S skeleton, 838D gem-set skeleton, 600S skeleton, 600D gem-set skeleton and 1200S skeleton movements. As in the case of the 1200D gem-set skeleton, the movement’s thinness is matched by the exquisite delicacy of detail.