This Revue Thommen model B-13 has 8 days power reserve and 17 jewels, it is Military dessigned as ABU 11/A, it has the peculiarity of the chronograf minute counter hand the one with a flat end is for 12 minutes instead of 60 minutes as the average chronometers, when this hand is in the number 1 is one minute measured not 5 as other chronometres.
