Watch Accuracy Shootout

And here we go! I'm bored, so measuring accuracy of my 3 favourite mechanical watches. The results may surprise you :-)

First up... My Sinn 104. Lovely watch:

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Running at just over -2 s/d, on the timegrapher it is a very solid watch. It was serviced last year and runs very well. But under real conditions it runs around -4 to -6 seconds per day.

Next up.... My Tudor BB58:

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Only just making COSC at -4 s/d. In real world, its running a bit slower than that, at around -5 s/d. I've had this for 4 years, and it hasn't been serviced. That narrow line and tiny beat error tells a good story in comparison with the others.

Finally - my Hamilton Pilot Pioneer Khaki Mechanical:

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Running at +2 seconds per day, this is an absolute peach of a watch. In real world, it runs around +3 s/d. I've had this for 6 years and it shows no sign of slowing yet. There's a few hiccups in the movement, but I haven't wound it for a few days, so I'll give it some leeway. reckon it'll be OK for a while, but might need a service before long.

So there you have it. 3 watches, 3 different price ranges, two "in-house" movements, one Sellita. The Tudor is the least accurate on a timegrapher, but is more positionally stable than the Sinn, perhaps due to the balance bridge. The Hamilton is the most accurate (and the cheapest).... Go figure!

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I have 3 watches with an 80 hour swatch group movement (Rado, Hamilton,Tissot) - all of them keep better time than my Breitling Superocean, which cost at last 4 times as much as the others (and is currently with Breitling for repair under warranty)โ€ฆโ€ฆ

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I have a $160 SanMartian thatโ€™s 1 second slow per day

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My khaki pilot pioneer also runs about 2 secs a day. Had no idea that watch has been out for 6 years, I could've sworn it came out in 2021.

ยท

Last week I built a watch using Chinese ST3600 that I bought on eBay. As you can see, it is also runs pretty good.

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