A redeployment of the original design from 1986, the 41mm SSNAV-D is built for the skies. Cleared altitudes of up to 35,000ft, the SSNAV-D features a 12 hour GMT bi-directional bezel for accurate timekeeping in up to two time zones. Tap to shop the watch. #MarathonWatch #BestInTheLongRun #SSNAV #PilotsWatch #PilotGear #WatchCollector #WatchEnthusiast