My take on O1VR/ETA 2824-2 - Watch Freeks

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Old 08-29-2017, 10:37 PM   #1 (permalink)
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Default My take on O1VR/ETA 2824-2

This is my first ETA 2824-2 watch and I had high hopes after reading so much about how much of a workhorse it is. I ordered directly from Steinhart and within 7 days, the watch was at my door. Beautiful watch, loved it, put it on and was really happy. The lugs are a little flat so it does wear a little big, but nothing too crazy.

After a few days, it was about +20/sec per day. And while it is in spec for the ETA 2824-2 Elaboré, I was a little disappointed after reading so many glowing reviews of people having them be within +-3/sec day. So it stayed consistent, but still kind of irked me, and after about 3 weeks, I decided to put it over a compass to see if it was magnetized. Now I know a magnetized watch will usually be off by a LOT and +20sec/day is not a lot. But it did move the compass needle a bit when brought over it. So, I ordered one of those blue demagnetizers from eBay, and got it to the point where it wasn't moving the compass needle. But the next day, it was still about +20sec fast. I tried all positions at night and nothing seemed to affect it.

But one night, I forgot to take the watch off and slept with it on. The next day it was right where it had been synced. It was within +1 sec after 24 hours. Could it be that the consistent body temperature keeps the movement in check and completely accurate? I've taken it off since then and it gains about +10/15 sec per 24 hours in any position overnight. But, if I wear it to bed, it stays within +1 sec per 24 hours. I have to believe the consistent temperature might have more to do with the movement accuracy than the actual position. Has anyone else noticed this? I couldn't find anything about it, so I'm sharing it here.

It's a great watch which I love, and I know many many watches use this movement. So if you have one that seems to be running fast (which I've read they default to doing), try wearing it 24 hours and see how accurate it is.
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Old 08-29-2017, 11:29 PM   #2 (permalink)
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I also noticed it, but with a much much smaller variation :
- when I wear the watch during the day, the variation is +1s
- when the watch is on a table during weekend, the variation ins +3s
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Old 08-30-2017, 03:52 AM   #3 (permalink)
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Temperature change affects the viscosity of lubricants, and possibly the temper of the hairspring. The position doesn't change off the wrist, so doesn't have the benefit of average position.
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