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AR15.COM
1/15/2026 1:07:41 PM EDT
What’s y’all’s accuracy expectations/experience for a mechanical watch?


I have several Tudors.  For the most part, they’re well within COSC parameters.  I’m wearing this one right now, I have been all week.  It’s currently -1 second since I pulled it out and set it Sunday night.

Attached File


Both of my Omegas run about a second or two per week. (Early Co-axial seamaster and a new production Speedmaster)

My Rolexes struggle sometimes.  The last few times I wore my deep sea, it was flirting with -6/7 per day.


What are y’all’s expectations?  

I’m not terribly anal about it, but I do like to see things function properly.


(I do not store my watches on winders)
Happiness is the greatest agent of purification

Bikini Bottoms underneath, but the boys hearts still skip a beat, when them girls shimmy off, them old cut offs
1/15/2026 5:02:55 PM EDT
[#1]
I believe Rolex specs -2/+2 seconds per day for their watches, maybe a service is in order for your Deep Sea.

I prefer that my watches run fast instead of slow. Faster/easier to correct the time when it’s needed.

These are the watches I have been tracking lately. I rotate through them daily, sometimes several per day, so it’s a mixture of wear time and watch box time.

Emotional attachment doesn't trump generational advancements.
1/15/2026 5:37:59 PM EDT
[#2]
Expectations are per manufacturer and movement quality. My Bulova is faster than my Rolex.

2024 Bulova Wilton is within spec at 8 spd fast.

2024 Aquis 733 is better than spec sub 4 spd fast.

2014 Chris Ward GMT is also sub 4 spd fast.

2002 Rolex DJ is 1.8 spd fast.

I would be disappointed if a watch was outside manufacture’s spec.
1/15/2026 10:01:10 PM EDT
[#3]
Quote History
Originally Posted By FRBaseball:
I believe Rolex specs -2/+2 seconds per day for their watches, maybe a service is in order for your Deep Sea.

I prefer that my watches run fast instead of slow. Faster/easier to correct the time when it’s needed.

These are the watches I have been tracking lately. I rotate through them daily, sometimes several per day, so it’s a mixture of wear time and watch box time.

https://www.ar15.com/media/mediaFiles/116300/IMG_8285-3695238.jpg
View Quote


Deep Sea is new (got it in June I think)
Datejust is new (got it around April something)

To be clear, I’m not knocking them.  When I have them on, I just feel different (in a good way, of course)

Happiness is the greatest agent of purification

Bikini Bottoms underneath, but the boys hearts still skip a beat, when them girls shimmy off, them old cut offs
1/16/2026 8:28:55 AM EDT
[#4]
Quote History
Originally Posted By redfish86:


Deep Sea is new (got it in June I think)
Datejust is new (got it around April something)

To be clear, I’m not knocking them.  When I have them on, I just feel different (in a good way, of course)

View Quote


New or not, i would get the Rolexes serviced if they are off by 6 spd. My Oris was off by 8-9 spd new. I sent it off for service within a month of purcahse. Now sub 4 spd. Under warranty, it wont cost you anything but time. It will give you a chance to wear those forgotten watches in your stable.
1/16/2026 12:46:11 PM EDT
[#5]
You can also tweak long term accuracy by changing the watch’s position during storage.  In general, dial up = faster, crown up = slower.  My Sprite runs slightly fast during normal wear, but storing it crown-up overnight completely offsets it to the point that I never have to correct it.

Attached File
1/16/2026 12:54:13 PM EDT
[#6]
Originally Posted By redfish86:

My Rolexes struggle sometimes.  The last few times I wore my deep sea, it was flirting with -6/7 per day.

View Quote


Are you just tossing it on your wrist or winding it fully before wearing?
1/17/2026 4:38:54 PM EDT
[#7]
Quote History
Originally Posted By WI_DeerHunter13:


Are you just tossing it on your wrist or winding it fully before wearing?
View Quote


I always fully wind, the set, the put on.
Happiness is the greatest agent of purification

Bikini Bottoms underneath, but the boys hearts still skip a beat, when them girls shimmy off, them old cut offs
1/17/2026 7:13:22 PM EDT
[Last Edit: gotigers][Edited] [#8]
Quote History
Originally Posted By redfish86:


I always fully wind, the set, the put on.
View Quote


How long did you test the accuracy? I usually test the accuracy over a week or two.

I started an accuracy test on my new OP 41 last thursday. When i synced with Time.IS i was about a 1/2 sec or so off. But in a week, that will come out in the average.

I need to get a timegrapher.
1/17/2026 7:43:03 PM EDT
[#9]
Quote History
Originally Posted By FRBaseball:
I believe Rolex specs -2/+2 seconds per day for their watches, maybe a service is in order for your Deep Sea.

I prefer that my watches run fast instead of slow. Faster/easier to correct the time when it’s needed.

These are the watches I have been tracking lately. I rotate through them daily, sometimes several per day, so it’s a mixture of wear time and watch box time.

Attached File
View Quote


How are you guys testing your watches within a 10th of a second per day?  I've actually never tested mine, but haven't noticed them running exceptionally fast or slow.  I work from home tho, so I only wear my watches if I leave the house after work and on the weekends so I'm always winding and setting before wearing.

SIDE NOTE....I've seen that Black Bay 68 with the blue dial in person and it's AMAZING!!  I wish my wrist was big enough to wear it!!!
1/18/2026 12:09:01 AM EDT
[#10]
Quote History
Originally Posted By gotigers:


How long did you test the accuracy? I usually test the accuracy over a week or two.

I started an accuracy test on my new OP 41 last thursday. When i synced with Time.IS i was about a 1/2 sec or so off. But in a week, that will come out in the average.

I need to get a timegrapher.
View Quote



I don’t have a machine or anything like that.  I just tend to get curious after a week or so and check the current time from my iPhone or the website which shows “official time”.  I usually do that after a week or so.
Happiness is the greatest agent of purification

Bikini Bottoms underneath, but the boys hearts still skip a beat, when them girls shimmy off, them old cut offs
1/18/2026 5:19:07 PM EDT
[#11]
You can use a pc or phone app with a microphone.

1/19/2026 9:56:26 PM EDT
[#12]
Quote History
Originally Posted By bnoji:
You can use a pc or phone app with a microphone.

https://i.ibb.co/FbQqvGYM/Screenshot-20260118-145335.png
View Quote



Thanks!

I’ll check it out.
Happiness is the greatest agent of purification

Bikini Bottoms underneath, but the boys hearts still skip a beat, when them girls shimmy off, them old cut offs
1/20/2026 10:56:56 AM EDT
[Last Edit: gotigers][Edited] [#13]
Last years i had a Chris Ward that suddenly went to 10+ spd fast. The suddeness, made me think that maybe it was a magnetism issue. I ordered $12 demganatizer from amazon. After the demagnization, i synced the time. 5 days later, it was sub 4 spd fast. That is way better than CW spec.

I bought a new watch last week that was out of spec by a couple of seconds. I demagged it. It is now at -1.8 spd now. Well within spec.

Start cheap. I am convinced that demag first will fix many accuracy issues. Anytime i can prevent a service or shipping a watch is a good thing.
2/5/2026 12:25:01 PM EDT
[Last Edit: redfish86][Edited] [#14]
I’m at 12 or 13 days since pulling this one out and setting it, wearing it every day since.  I always take it off at night, its orientation overnight is random.  

It is currently 3 seconds fast according to the clock on my iPhone (which is what I always use to set my watches)

Attached File
Happiness is the greatest agent of purification

Bikini Bottoms underneath, but the boys hearts still skip a beat, when them girls shimmy off, them old cut offs
2/5/2026 1:16:10 PM EDT
[#15]
P39

It's been running since Sept. I'm about 10 sec off since then. I can't remember if that was fast or slow.
2/5/2026 4:38:32 PM EDT
[#16]
I wear my watches usually for a Week at the time. I dont even set the seconds,   as long as they gain or loose less than a minute in that Week timeframe i dont notice and therefore dont bother.

They all do that easily.
2/6/2026 7:43:13 AM EDT
[#17]
The amplitude is a key way to determine if your watch needs service. If the amplitude range is good, it probably only needs regulation.
Make crime illegal

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