Both the hour and minute hands and the applied indices of the Orient Modern Automatic Tetrahedron Grey FAG00004B0 men's watch have a tetrahedral geometry. Indices and hands have only been produced in this miniature size since the 20th century. But they, too, are now almost classics, just like the tourbillon window on the 9, which is only used to view the balance wheel movement of the F6T22 mechanical calibre. The tourbillon itself is no longer necessary in modern movements. The dark grey of the dial forms a harmonious, almost flowing unity with the tourbillon window, as well as with the indices and the hands, gently bordered by the polished stainless steel case with slender receptacles for the black leather strap. A look at the screw-down case back of the Orient Modern Automatic Tetrahedron Grey FAG00004B0 men's watch reveals a further visual approach to the movement. The oscillating weight of the automatic calibre, which can also be wound by hand and has a power reserve of 40 hours, can be viewed through an inspection glass.