Oris BC3 Day Date

The Oris BC3 Day Date, reference 01 635 7534 4164-07 8 20 69, has a 42 mm steel case with a steel bracelet and 20 mm lugs, water resistant to 100 metres. Individual weekday and date windows occupy the black dial under a flat sapphire crystal. Central seconds run above the dial, while the case has a see-through back. The self-winding movement is calibre 635 with a 38-hour power reserve.