Audemars Piguet Royal Oak Concept Watch 44mm Titanium Black 26589IO. Introducing the ROYAL OAK CONCEPT Flying Tourbillon GMT, a cutting-edge timepiece crafted from sandblasted titanium and satin-brushed grey ceramic. The blue rubber strap complements the movement’s blue bridges showcased on the dial. This watch features a sandblasted titanium case, glareproof sapphire crystal and caseback, a grey ceramic bezel, a screw-locked crown and pushpiece, and sandblasted titanium pushpiece guards.