GIRARD-PERREGAUX R&D-01 CHRONOGRAPH Steel, self-winding mechanical movement, reference 49931. Reference: 49931. Serial number: 25. Case: steel, 42 mm in diameter. Dial: black, with four sub-dials for seconds, hour totaliser, date and day/night indicator. Movement: mechanical, self-winding. Strap: rubber with a Girard-Perregaux-signed stainless steel folding clasp. Glass: sapphire. Accessories: comes with its presentation box, user manual and Girard-Perregaux warranty card. A stainless steel gentleman’s wristwatch with automatic movement, by Girard-Perregaux.