Mine is 99.996% accurate (+/-3 seconds per day) which comes under 'Excellent' for a mechanical non-COSC Certified watch.
How accurate is your watch?
Good enough for government work...
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All of mine are accurate enough to make sure I'm on time. To me, "on time" means 15 min. early; anything less is "late" 
I have several radio controlled watches who's accuracy is as accurate as the radio signal. I have numerous quartz watches which are way more accurate than anything that cheap has a right to be.
This watch is very accurate I have not set if for two or three months at a time and its been less than a minute off
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of my purely mechanical time pieces this old grand seiko is still running well within the very stringent plus five and minus three in six positions as stated from Seiko. I have had the timing checked various times and its sometimes six seconds but most often about four. I am astonished all the time about how well it keeps time considering its age and the abuse I put it through as a younger man wearing it in the commercial kitchen in which I was working
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This watch is very accurate I have not set if for two or three months at a time and its been less than a minute off
of my purely mechanical time pieces this old grand seiko is still running well within the very stringent plus five and minus three in six positions as stated from Seiko. I have had the timing checked various times and its sometimes six seconds but most often about four. I am astonished all the time about how well it keeps time considering its age and the abuse I put it through as a younger man wearing it in the commercial kitchen in which I was working
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As accurate as it's ever going to be (pic is awful because my phone is broken. This is from my tablet)!
Sent from yet another electronic gadget...
Sent from yet another electronic gadget...
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