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@ruari I set my automatics with precision! It’s an obsession with me and allows me to track accuracy over time as well. I use the atomic time on my Mudmaster or Rangeman, or my Citizen Satellite Wave which syncs to either GPS or satellite when outside. When I’m lazy I’ll use my iPhone (much less elegant). My most accurate automatic watch right now is the Hamilton KFA, which is accurate to within a second a day.