The Audemars Piguet Royal Oak Concept GMT Tourbillon (ref. 26588IO.OO.D067CA.01) is a men's watch with a 44 mm octagonal case in ceramic and titanium. It has a black, red and skeletonized dial under sapphire crystal.
It is powered by the hand-wound mechanical calibre AP Calibre 2913 with a power reserve of 237 hours. Functions: Second time zone, tourbillon. Water-resistant to 100 m. The watch is fitted with a rubber strap with a folding clasp in titanium.
This example is brand new, and comes with the original box and papers.