Wind it manually, all the way (50 turns of the crown), set it to the second with a known reliable time source. Then WEAR it for a week. Take off only briefly, if at all. After a week, check the time with your time source, and get back to us. Inconsistent wearing habits result in inconsistent time keeping. Your watch is not quartz!

 

Not really. From a brand perspective maybe, from a horological perspective it's pretty much on par with Omega and behind some of the luxury brands.

 

purely curious of your preferred method for measuring this?

 

I don’t have any fancy hardware at home, and find this synchronized website a pretty useful time source

https://www.time.gov/

 

I tested for 12 hrs both of my Dj41 today, neither was off by more than a second . So I guess that’s good news

 

There’s a few out there, but I use the Emerald time app. It draws from a number of NTP Internet data sources and is supposed to be the most accurate.

 

9 seconds is way too much an unacceptable in my view. Have it regulated by your AD under warranty. These high end movements are built to do 2sec per 24h. My 124060 runs beautifully.

 

I agree. Hardware wise they are similar.

 

After a night in the box resting face up the Dj is still within a second.

I don’t normally do this but was concerned and curious. Certainly surpasses my expectations

 

For my 2020 no-date Sub, I’m less than 24hrs into @Canuck ’s intriguing but excruciating suggestion for a week’s long test “as worn.”

If anyone wants to chime in to demonstrate that a full week is unhelpful, my other watches will thank you ...

 

I can't wear the same watch for a week. 24 hrs is as far as I go. If I saw that there was a 3 o4 second variance then maybe I'd stretch to 4 or 5 days to see if it balances out. but I wore it for 12 hrs, and left it rest for 12 hrs and it was on the money so I'm satisfied.

 

At 24hr, mine is +1 sec. Now for 24hr face up in box.

The prospect of keeping it on a full week had me feeling somewhere between claustrophobic and a cat with tape on its paws