Pierre DeRoche TNT Royal Retro GMT 1/2 hour Limited Edition of 201 Pieces Mechanical automatic, exclusive Dubois Dépraz calibre, 48 jewels, decorated and engraved oscillating weight, central bridge, 4 chamfered and satin-finished seconds bridges, minute wheel with Pierre DeRoche logo, hands affixed by a transversal pin, 4 gear-driven retrograde seconds hands with strip-spring return. Hours, minutes, retrograde seconds in 4 ten-second sections, moving retrograde hand indicator, date and second time zone adjustable in half-hour increments.