Comparazioni: 251.471-10½´´´Diameter 23,30 mm Height 4,70 mm-Hours, minutes, small jumping second at 6 o’clock Date display in window-Chronograph with 2 push buttons Counters 1/10th of seconds, 60 seconds, 30 minutes Functions: ADD, SPLIT-Stop second / stop motor End-of-life display (E.O.L.) Time-zone mechanism-23 jewels PowerDrive