Audemars Piguet Selfwinding Chronograph

Audemars Piguet's Royal Oak Offshore Selfwinding Chronograph 26231ST.ZZ.D002CA.01 is a chronograph in a 37 mm steel case. The case measures 12.4 mm thick and carries a sapphire crystal over a black dial. Inside is the self-winding calibre 2385, which drives the chronograph, small seconds and date functions. The chronograph pushers flank a screw-locked crown, standard for this Offshore line. A black rubber strap closes with a folding clasp in steel. This is a women's model, sized down from the standard Offshore. The case holds a water resistance of 50 metres.