Is it normal to have rolex watch to slow 3-5sec/day?

[3kingdom]

I keep the watches in the watch winder and notice that the rolex watch tend to slow 3-5sec/day?
Is it normal, should I bring to RSC to regulate?

[pegasi]

I keep the watches in the watch winder and notice that the rolex watch tend to slow 3-5sec/day?
Is it normal, should I bring to RSC to regulate?

You expect the watch to be +/-0

[feilong108]

Within factory specifications.....of +- 10 secs...COSC Standard...

[pegasi]

Within factory specifications.....of +- 10 secs...COSC Standard...

Errr...COSC standard is -4/+6

[feilong108]

wow...then Geneve standard???

+- 2??hehehe...

[feilong108]

My bad...remember wrongly....COSC standard from 1961 to 1973 is -1 to + 10 per 24 hours in 5 positions....

From 1973 onwards is -4 +6 per 24 hours...

My lack of coffee mind is getting to me recently!!!

[3kingdom]

Thanks feilong and pegasi for the info.
So, given that is is -4 +6, so does it mean that one watch will always be one way the '-ve' or '+ve' side only?

[feilong108]

Erm...dun get what you mean...

[3kingdom]

Erm...dun get what you mean...

I mean if the watch is going slow (-ve), it will continue to behave this way. Or the other way round if goes fast (+ve).

[pegasi]

Thanks feilong and pegasi for the info.
So, given that is is -4 +6, so does it mean that one watch will always be one way the '-ve' or '+ve' side only?

No. The accuracy of a mechanical watch can swing either way during its life time depends on usage and external influence. For example magnetization usually causes a watch to run faster while lack of timely maintenance of movement could result in watch running slower due to lubrication issue.

[3kingdom]

No. The accuracy of a mechanical watch can swing either way during its life time depends on usage and external influence. For example magnetization usually causes a watch to run faster while lack of timely maintenance of movement could result in watch running slower due to lubrication issue.

Thanks pegasi for the info.