Oris BC4 Chronograph

The Oris BC4 Chronograph, reference 01 674 7616 4154-07 8 22 58, is a chronograph with a 42.7 mm steel case and a see-through back fixed with screws, on a steel bracelet at 22 mm lugs, water resistant to 100 metres. The black dial has small seconds and elapsed-time counters under domed sapphire. Self-winding calibre 674 has a red rotor and a 48-hour power reserve. A date window supplies the dial's calendar indication.