Audemars Piguet Royal Oak Chronograph 41mm Mens Watch 26331IP.OO.1220IP.01. Titanium case. glareproofed sapphire crystal. polished 950 platinum bezel and links. screw-locked crown. 41 mm case width. Water Resistance 50 m. Case thickness 11mm. Slate grey dial with “Grande Tapisserie�?pattern. blue counters. white gold applied hour-markers and Royal Oak hands with luminescent coating.Titanium bracelet with polished 950 platinum links and titanium AP folding clasp.