The Stainless Steel Navigator Series features the most accurate movement in the Marathon lineup: the 3 Jewel ETA F06.412 with HeavyDrive-PreciDrive, accurate to ± 10s/year and operating at 32’768 Hz. Tap to shop the watches. #MarathonWatch #BestInTheLongRun #SSNAV #PilotsWatch #QuartzWatch