Audemars Piguet Selfwinding Chronograph "50th Anniversary"

Audemars Piguet's Royal Oak Selfwinding Chronograph "50th Anniversary", reference 26240ST.OO.1320ST.03, measures 41 mm in steel. The case is 6.8 mm thick and pairs with a white dial under a sapphire crystal. Inside is the self-winding calibre 4401, an in-house movement built for chronograph work. This is a chronograph with flyback function, running alongside small seconds and a date display. The combination lets the wearer restart timing instantly without stopping the mechanism first. A steel bracelet with an AP folding clasp closes the watch on the wrist. Water resistance is rated to 50 metres.