The movement is COSC, so it’ll be -4 to +6 seconds per day. My Zulu Time isn’t exactly the same movement but it’s running at about +1 spd.

 

It’s fairly slow for me -40 spd

 

That’s way out of spec. It’s a cosc movement and should be -4/+6 at max. That should be fixed under warranty.

Mine is +0.5 spd

 

the accuracy on mine is excellent with +-0.5s/d, its awesomeee

 

Mine is at the edge of the COSC spec, around +5-6 sec/day.

 

Being at the edge of COSC would bother me. Have you thought about taking it in to Longines/Swtach Group for adjustment under warranty?

 

Mine easily stays within COSC.

 

thanks.. I think I should get it serviced even.. I think I just got the short end of the stick ina trade!!

 

I've had 2 Spirits.

One ran like a top. Second one (AD-used) was running at +9, so well out of COSC. I contacted my AD and they had it sorted within 2 weeks.

My non-COSC L888 Longines have generally run very well and been in or around +3/6 spd. My COSC Longines have run within a range of -1 to +3 or so with excellent consistency, which is plenty good enough for me.

 

This is older thread, but as I am really satisfied with this movement, I want to report one more case of great accuracy. It is almost 0 spd. I do it with positional regulation but still it is really grat.

it even wins my Co-axial 8900 and 8500 which are runnin on edge of Metas and Cosc for 8500, while this l888.4 is just at prrfect spot

 

My L888 is also very accurate. Usually 0-4 spd but 0 spd after resting horizontally overnight. Very satisfied with this watch

 

Mine (Spirit 37) is also incredibly accurate -- something like plus .2 spd over several months and seems relatively impervious to positional variation. This 37 is much better than either of my Sprit Tis, so there does seem to be some variance. But both of those were within COSC specs also.

 

I have the Spirit Zulu and I realize it has a different movement, but I too am seeing incredible accuracy. This is my first chronometer certified watch so I expected it to be more precise than my Hamiltons, which it certianly is, but I didn't expect it to be THIS good. I also don't see much of a difference in positional variance, but it does (sometimes) seem to lose a second if you place it crown down and either gain it back or stay the same if you lay it flat. Having said that I've had this watch five months and I've only had to adjust it once. It's currently at 0 spd after 2.5 months.

 

My Spirit Zulu also has incredible accuracy as well. <+1 spd and butter smooth winding. A really great movement and watch!

 

Mine is spot on. Better than omega 8900

 

I just bought a Record, 40mm. Excellent watch and running 2-3 spd fast.