circular-grained external zone
screw-locked crown and pushpieces with titanium pushpiece guards
35 mm thick
BRAND Audemars Piguet SERIES Tourbillon Openworked MODEL NUMBER 26399CR
caliber 2385 self-winding movement with chronograph
Audemars Piguet Royal Oak Offshore Chronograph Watch - 26470ST.OO.A027CA.01 Gold circular-grained external zone42mm steel case, 14. 20mm thick, sapphire back, screw locked crown and pushpieces, steel bezel, sapphire crystal with glare proof, blue dial with mega tapisserie pattern, silver toned counters, white arabic numerals with luminescent coating, white gold royal oak hands with luminescent coating, blue inner bezel, caliber 3126 3840 automatic movement with chronograph, hours, minutes, small seconds, date, approximately 50 hours of power reserve, blue