The Blue Chip Chronograph Skeleton embodies more than forty years of the experience of master skeleton-designer, Armin Strom, senior director of Armin Strom AG, in the artistic refinement of watch movements. With patient craftsmanship, saw blade and file, Armin Strom creates delicate, hand-engraved watchcraft gems, each individual piece a unique specimen. Anti-reflective sapphire crystals reveal the full inner workings of the masterpiece.