Girard-Perregaux 1966 40mm

The Girard-Perregaux 1966 40mm, reference 49555-11-231-BB60, has a steel case measuring 40 mm across and 8.9 mm thick. Self-winding calibre GP03300 contains 27 jewels and operates at 28,800 vibrations per hour (4 Hz), with a power reserve of 46 hours. A sapphire crystal covers the smoky grey dial with central seconds and a date display. The case is entirely polished and carries a 30 metre water-resistance rating. A black alligator leather strap fastens with a steel pin buckle. Blued steel screws and gilded engravings are visible through the sapphire display back.