Oris BC4 Flight Timer

The Oris BC4 Flight Timer, reference 01 690 7615 4154-Set MB, is a GMT watch with a 42.7 mm steel case with a see-through back on a steel bracelet with 22 mm lugs, water resistant to 100 metres. A second time zone and small seconds occupy subsidiary displays on the black dial beneath domed sapphire. The dial offers a quick-set date, while a rotating bezel is part of the design. Self-winding calibre 690 delivers a 38-hour power reserve.