A few months ago in June 2016, I ordered two pilot watches from Parnis (www.parniswatch.net). Unfortunately, one of them, the Jumbo Pilot was not working (please refer to this link on the review of the other Parnis pilot watch; Parnis Black Dial Big Pilot Power Reserve Chronometer). After sending the watch back to Parnis, I received a new example which was working (more about the problems later).
This particular model conforms to the original specification of pilot watches under the German 'B-Uhr' Watch (or Observation watch) standard FL23883 of the WW2 era which calls for a watch that is 55 mm wide (excluding crown; with crown it would go to 60 mm) with a large crown. Under the A-dial format, it should also have a black dial with white Arabic numerals (all numerical markers filled with luminous material) and flame-blued sword hands also covered in luminous material. The designs also featured a unique triangle mark at the 12 o’clock position designed for ease of orientation in any condition. The movement must be capable of stopping the central seconds hand by pulling the crown. The watch should also come with a very long double-riveted leather strap.