The 26170ST.OO.D305CR.01 navy chronograph from Audemars Piguet displays the stately design that Royal Oak Offshores are known for with a classic nautical design. The 26170ST.OO.D305CR.01 has a stainless steel case that is 42mm in diameter and 14.3 mm thick with a sapphire crystal, a screw-down crown, and black rubber-clad push-pieces. The dial is white with a mega tapisserie pattern with navy sub-dials, a date window, Arabic numeral hour markers, and a tachymeter inner bezel. The 26170ST.OO.D305CR.01 is powered by the self-winding 3126 caliber which has chronograph and date functionality with a power reserve of 50 hours. The case is paired with a hand-stitched Hornback navy alligator strap with a stainless steel fold-over clasp. It has a water resistance of 100 meters (330 feet).