Oris Big Crown Complication

The Oris Big Crown Complication, reference 01 581 7627 4361-07 8 20 78, is a GMT watch with a 40 mm steel case on a steel bracelet with 20 mm lugs, water resistant to 100 metres. Rose gold PVD plating covers the bezel beside the silver dial under domed sapphire. Subsidiary displays show the date, weekday and second time zone. The moon phase window shares the display with central seconds. A see-through back closes the case. Calibre 581 is self-winding with a 38-hour power reserve.