Oris BC3 Day Date

The Oris BC3 Day Date, reference 01 635 7534 4164-07 4 20 10, has a 42 mm steel case on a rubber strap with 20 mm lugs, rated to 100 metres. The black dial places individual day and date windows beneath flat sapphire. Central seconds are driven by self-winding calibre 635 with a 38-hour power reserve. A screwed, see-through back provides the rear view of the case.