Always plus, never minus.

[Simon_jrees]

Although it's within the 2 seconds a day my Daytona since recent service is always +2 and it's every day... seriously it never falls back, it it normal to always have + and no - ?

[WatchEater666]

Depends on how you store the watch.

[Rushne]

Even if you store it crown down/up?

Case back down or crystal down could see a +2 but then a crown up or down position should maybe be +0 / -1?

If you always store it case back down like in a watch box. I would say +2 is pretty normal

[Simon_jrees]

Originally Posted by Rushne

Even if you store it crown down/up?

Case back down or crystal down could see a +2 but then a crown up or down position should maybe be +0 / -1?

If you always store it case back down like in a watch box. I would say +2 is pretty normal

Doesn't seem to have any effect even when I rest it crown up or down.

[Simon_jrees]

Originally Posted by WatchEater666

Depends on how you store the watch.

Whichever way it's stored lol.

[joli160]

Originally Posted by Simon_jrees

Doesn't seem to have any effect even when I rest it crown up or down.

That is indeed correct for more modern movements 31...
It was an effective method for the older movements.

[jimcameron]

Sell the Rolex, buy an Apple.

[padi56]

Originally Posted by Simon_jrees

Although it's within the 2 seconds a day my Daytona since recent service is always +2 and it's every day... seriously it never falls back, it it normal to always have + and no - ?

You have a movement in 10000000 with such consistency and looks like your watch has been regulated well, and matches your wearing habits but like all movements could change. Many things effect watches on the wrist or on one of these machine winder things, such as gravity, mainspring power-reserve, different temperatures, shocks, and so on, and no purely mechanical will keep 100% perfect time for ever, and always remember there are 86400 seconds in a day.

[TswaneNguni]

Great movement the 4130 .+2s/day is fine Try crown up overnight ,may slow down with about 1s .

[Simon_jrees]

Originally Posted by padi56

You have a movement in 10000000 with such consistency and looks like your watch has been regulated well, and matches your wearing habits but like all movements could change. Many things effect watches on the wrist or on one of these machine winder things, such as gravity, mainspring power-reserve, different temperatures, shocks, and so on, and no purely mechanical will keep 100% perfect time for ever, and always remember there are 86400 seconds in a day.

[Simon_jrees]

Originally Posted by TswaneNguni

Great movement the 4130 .+2s/day is fine Try crown up overnight ,may slow down with about 1s .

[Simon_jrees]

Originally Posted by jimcameron

Sell the Rolex, buy an Apple.

[peterpl]

All my Rolex's have been slow actually. Not a single one has been fast. Its always -2s per day.

I actually prefer it to be fast than slow.

[padi56]

Originally Posted by peterpl

All my Rolex's have been slow actually. Not a single one has been fast. Its always -2s per day.

I actually prefer it to be fast than slow.

Been wearing Rolex watches for around 50 odd years now and over those years never needed the use of todays apps. Or constantly checking or worrying over a few seconds, I checked mine mostly around every month or so if a minute or so out will adjust. And in all those years of wearing Rolex watches never been late or missed a bus, boat, plane, or any appointments because my watch was a few seconds fast or slow a day.

[brucethemanlee]

All my Rolex watches have been fast +1 to +3

My new Sub is the one watch that is negative with -1 while wearing and storing dial up. Seems like there is no effect whichever way it is stored except when I store it crystal down then I get a +1. So in a 24 hr cycle it is 0 secs off. I will definitely monitor over longer period and see how watch performs over longer term

[Simon_jrees]

Originally Posted by brucethemanlee

All my Rolex watches have been fast +1 to +3

My new Sub is the one watch that is negative with -1 while wearing and storing dial up. Seems like there is no effect whichever way it is stored except when I store it crystal down then I get a +1. So in a 24 hr cycle it is 0 secs off. I will definitely monitor over longer period and see how watch performs over longer term

My sub 114060 seems to be crazy accurate, it always finds it's way back to how I set it.

[fskywalker]

Prefer a plus rather than a negative in time keeping, consistent +2 is awesome!


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[jrs146]

That’s really darn good. I’m honestly not sure what mine are I’ve never tested them. But if he happy with +2!


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[Oyster Sauce]

Originally Posted by padi56

Been wearing Rolex watches for around 50 odd years now and over those years never needed the use of todays apps. Or constantly checking or worrying over a few seconds, I checked mine mostly around every month or so if a minute or so out will adjust. And in all those years of wearing Rolex watches never been late or missed a bus, boat, plane, or any appointments because my watch was a few seconds fast or slow a day.

I have to remind myself of this practical truth regularly!

On a lighter note, when I first read the title of the thread, I thought the gist was going to be something like “always add watches to the collection, never take away...”

[bmb15]

For daily life, it’s not important if a mechanical watch deviates a few seconds per day, either + or -, compared to 86400 s/d.

Second, it’s basic and simple physics that the accuracy of each mechanical watch strongly depends on many parameters, such as initial calibre regulation, your wearing pattern, storage conditions, temperatures, shocks etc. Hence, tips how to place a watch, e.g. overnight, is of limited use for most cases.

BUT, if Rolex advertises and sells watches within concrete specifications, such as COSC accuracy and power reserve, and gives a 5-year guaranty, then new watches must run within these specs, at least for a certain time, independent how many seconds a day, a week, or a month has.

Nobody would accept to buy a car with nominal 200 HP that only delivers 120 HP, either after a week, a month or a year!

[supernova]

Just adjust the time every 2 months when I adjust the date for a 30 day month.

For anything below +\- 10s/day this is fine. Stop stressing over a few secs/day, if you need to be on time to the exact min all the time, then mechanical watches are not for you.


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[supernova]

Originally Posted by bmb15

Nobody would accept to buy a car with nominal 200 HP that only delivers 120 HP, either after a week, a month or a year!

If Rolex says +\- 2s/day and one day it is -3s, it would be more comparable to a 200hp car only performing 199.5hp one day due to air temp etc.
As Padi mentioned, there are 86,400 secs in a day, being 1 sec out is about 0.0001% out.


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[JayHantz]

I never care too much, but I would always like a watch to be faster than slower. Easier to pull the crown out, wait a couple of seconds, and then have an accurate watch.

[bp1000]

All my Daytona's are the same, some are +1 and some are +2 and they stay like that every single day.

Positioning makes hardly any difference; they are incredible movements.

Esp compared to the speedmaster 1861 which is very sensitive to position. The 3861 is exactly the same as Daytona. Very consistent, very accurate.

[bmb15]

Originally Posted by supernova

If Rolex says +\- 2s/day and one day it is -3s, it would be more comparable to a 200hp car only performing 199.5hp one day due to air temp etc.
As Padi mentioned, there are 86,400 secs in a day, being 1 sec out is about 0.0001% out.


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You are right with THIS example.

Rolex says -2/+2 s/d after casing. Later COSC applies, i.e. from -4/+6 s/d

BUT, I bought 3 watches with 32xx movements, they were and still are all a nightmare in terms of deviation (s/d) and amplitudes (degrees). Mine even don't have 120 out of 200 HP.

PS: I can calculate 1/86400 = 1,16 E-5 (rounded) (that is not 0.0001% but 1E-6)

[Smobews]

My SD43 is consistently 20 seconds slow per month. Once a month I set my watch 10 seconds fast. I am then at most within 10 seconds of atomic clock time all month. That is outrageous accuracy for a mechanical movement.

It came out of the Rolex factory very well adjusted. The delta between face up and crown down (largest deviation) is 4 SPD.

I suggest checking it once a month. If you are within a minute a month, you are within Rolex specs. If it is significantly more than that, get it checked out and regulated.

[bmb15]

Originally Posted by supernova

If Rolex says +\- 2s/day and one day it is -3s, it would be more comparable to a 200hp car only performing 199.5hp one day due to air temp etc.
As Padi mentioned, there are 86,400 secs in a day, being 1 sec out is about 0.0001% out.


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Just to be clearer, I repeat what I posted some time ago in a thread called "Unbelievable Accuracy"

Rolex regulates new and serviced watches always to run a bit too fast, about 1-3 s/d. If this deviation remains linear with time, i.e. over days, weeks, months, then you have a perfect mechanical watch, despite the fact that with +2 s/d you would deviate +1 min/month. Don't forget that this is a deviation of only 23 microseconds/s.

In addition, the rate (s/d) is position and amplitude dependent. Therefore, your measured deviation over a long period also depends on how you wear the watch and in which position it remains over night. One also needs a precise and reliable reference clock to compare with.

If somebody wants a super precise watch, then either buy a quartz or a Caesium Atomic Watch

[Brian Page]

Originally Posted by Simon_jrees

Although it's within the 2 seconds a day my Daytona since recent service is always +2 and it's every day... seriously it never falls back, it it normal to always have + and no - ?

Perfect in my opinion

[Smobews]

get yourself a $200 timegrapher on Amazon and see for yourself what the slowest position is for your watch. Rest it in that position at night.

[bmb15]

Originally Posted by Smobews

My SD43 is consistently 20 seconds slow per month.

Congratulations, consistently 20 s/month is perfect.