Blancpain Fifty Fathoms Chronographe Flyback

Blancpain's Fifty Fathoms Chronographe Flyback, reference 5085F 1130 71S, is a chronograph with a 45 mm steel case. The case measures 15.5 mm thick, with a lug width of 23 mm. A sapphire crystal covers the black dial. Inside is the self-winding calibre F185, giving 40 hours of power reserve. The watch has a flyback chronograph function along with date and small seconds displays, both useful complications for a diver's tool watch of this type. It is fitted on a steel strap with a folding clasp. The case is water resistant to 300 metres, well beyond what daily wear would ever demand.