The Audemars Piguet Royal Oak Offshore Chronograph reference 25940OK.OO.D002CA.01.A, known to collectors as the "Rubberclad," is a bold sport chronograph built on a 42mm case in 18k pink gold. The signature octagonal bezel is clad in black rubber and secured by eight white gold hexagonal screws, with matching rubber cladding on the crown and pushers for a rugged contrast against the warm precious metal. The anthracite Méga Tapisserie dial features black subdials, applied Arabic numerals, and luminous gold hands, with small seconds at 12 o'clock, a 30-minute counter at 9 o'clock, a 12-hour counter at 6 o'clock, and a date aperture at 3 o'clock. Power comes from the self-winding Audemars Piguet Caliber 2326/2840, a cam-operated chronograph with 50 jewels beating at 28,800 vph and roughly 38 hours of power reserve. A sapphire crystal and solid caseback protect the movement, with 100 meters of water resistance, and the watch is finished on a black rubber strap with an 18k pink gold AP double folding clasp.