Audemars Piguet Royal Oak Chronograph with Selfwinding automatic calibre 2385 movement with a 40 hour power reserve made up of 304 parts and 37 jewels. Small seconds at 6 o'clock. Chronograph functions include a central seconds hand, 30-minute and 12-hour counters. Date display at 4.30. 18ct rose gold 41mm case with leather strap.