Oris Big Crown Telemeter Chronograph

The Oris Big Crown Telemeter Chronograph, reference 01 674 7569 4064-07 5 21 56, is a chronograph with a 43 mm steel case on a leather strap with 21 mm lugs, water resistant to 30 metres. Its black dial has small seconds and a date window beneath domed acrylic. Self-winding calibre 674 runs with a red rotor and a 48-hour power reserve. The see-through case back screws into the rear of the case.