Grand Seiko Spring Drive Chronograph GMT
Running on caliber 9R86, it features a vertical clutch and column wheel design and an accuracy rating of +-15 seconds per month (which extends to… Read More »Grand Seiko Spring Drive Chronograph GMT
Running on caliber 9R86, it features a vertical clutch and column wheel design and an accuracy rating of +-15 seconds per month (which extends to… Read More »Grand Seiko Spring Drive Chronograph GMT