Longines Caliber L687 beats at 28,800 vph, contains 25 Jewels & has an approximate power reserve of 66 hours. Base calibre ETA A08.L91. Silver dial with a fine barleycorn design textured. The longer of the 2 hands is fixed to the regular hour hand of the watch & points to the current hour in a 24 hour mode, this feature indicates if the watch is currently in AM or PM mode.