Brand new Audemars Piguet Royal Oak Offshore Tourbillon Chronograph gents watch, Model # 26288OF.OO.D002CR.01 18kt rose gold 44mm x 61mm case. Black forged carbon bezel with white screws. Black with gold-rimmed sub-dials. Black Ceramic chronograph pushers at 2 and 4. Center Chronograph seconds. 30-minute counter at 3.Manual wind movement, AP Caliber 2912 (328 parts). Hours, minutes, seconds, chronograph and tourbillon display. Screw-down (8 screws) 18k Rose Gold with RoyalOak Offshore Engraving. Black Crocodile leather strap with rose gold deployant buckle. Water resistant up to 20m / 60ft. Power reserve up to 70 hours. Tourbillon

　　compensates for differences in rate caused by a watch adopting different positions. The principle is to mount the balance and escapement in a rotating cage. The balance and escapement rotate around their common axis going through all positions to average out the errors, Tourbillon cages or platforms usually rotate once per minute but 4 minute and six minute tourbillons are also found. The Tourbillon complication is an extremely difficult accomplishment to achieve and generally demands a high premium.

　　subject to a