Blancpain Fifty Fathoms Chronographe Flyback

Blancpain's Fifty Fathoms Chronographe Flyback, reference 5085FA 3630 63B, is a chronograph in a 45 mm red gold case. The case measures 15.5 mm thick, with a lug width of 23 mm, and carries a sapphire crystal over a black dial. Inside is the self-winding calibre F185, with a power reserve of 40 hours. The watch combines a flyback chronograph with small seconds and a date function, useful complications for a tool watch of this size. The black dial is legible against the red gold case, a combination that gives the piece some visual weight on the wrist. It is fitted on a calf leather strap with a folding clasp. Blancpain rates the case to 300 metres.