Question regarding Rolex accuracy

[Lost Texan]

Is it normal for a new (ceramic TT Sub) Rolex to vary in time +/- over a weeks time? One day it's 3 seconds under and then two days later 2 seconds over?

Is it common to loose a second or two in a days time?

I'm new to this and it's all a mystery still.

Thank you,

John

[MURRAY]

I think in order to be within certification it needs to remain between -4/+6 seconds per day?

There are a ton of more educated people here than me on this...but your question around what fluctuations happen day to day week to week intrigues me as well.....

I thought I saw a thread the other day saying they work their best when they have the greatest power reserve level (most recently wound)....

Others?

[The GMT Master]

It's supposed to be within -4/+6 seconds per day (as per chronometer parameters), the best thing to gauge that is to measure it over the course of a week rather than just one day

[NavalFlight]

Mine fluctuates every day but averages out over the course of a week to be about 2.5 seconds slow per day.

[gmaines]

I guess I am lucky, mine is 3 seconds slow a week. not bad...

[smallcandle]

You are well within COSC standards.

[WatchSmith]

Congratulations on your very accurate Rolex. It's absolutely where it's supposed to be.

Originally Posted by Lost Texan

Is it normal for a new (ceramic TT Sub) Rolex to vary in time +/- over a weeks time? One day it's 3 seconds under and then two days later 2 seconds over?

Is it common to loose a second or two in a days time?

I'm new to this and it's all a mystery still.

Thank you,

John

[slevin kelevra]

im not so sure that a fluctuation is normal?? What are your wearing habits?? do you wear the watch the same amount of time each day? if your wearing habits stay the same yet the accuracy fluctuates id be asking questions.

I've had a lot of problems with the accuracy on my sub and its been to RSC twice in a very short space of time. It seems to be keeping great time now. I wear the watch roughly the same time every day and the gain each day is always the same.

[haakon59]

Rolex are not quartz watches, but running on the previous technology, which makes it an automatic, mechanical watch. Automatic watches are wound with the movement of your wrist, so if you are especially active one day but passive the next, you can expect there to be small fluctuations in the rate, etc. Given these realities, Rolex has adjusted the watch and even certified it to be within -4 to +6 seconds per day, which is pretty good, more than 99% accurate. If you are only interested in watches which have a steady rate every day, then you are not interested in an automatic, mechanically based watch. Generally, Rolex quality is pretty high and the watches they manufacture tend to be reliable, or as reliable as they can be given the technology.

[Lost Texan]

Thank you all for the responses. from what i've gathered, a watch that looses one second a day will be 6 seconds behind at the end of the 6th day. Correct? And that is in "spec"?

I will watch it over the next few days. My activity varies. I have a desk job but i am very active when i'm up and i usually talk with my hands. i do sit a lot though.

Other than my wifes wedding band and engagement ring, i've never owned anything like this and i don't want to hurt it. on the otherhand, for the geedas that i spent on the watch, it shouldn't even think of messing up.

Thanks again,
John

[dannyny]

i've lost 15 seconds in a week is this normal?

[karmatp]

Look at the booklets that came with the watch, it will explain how to self regulate your watch. By reading this, you will understand that a watch can gain or lose depending on how you lay it down at night. Once you get to know your movement better, you will understand it's personality and figure out ways to keep it more accurate. If your watch is losing 1 sec. a day, that is super accurate, and laying it a certain position at night can speed it up a bit if you like.

-4 +6 is within COSC specs, so 15 seconds in 7 days is great.

[dannyny]

Originally Posted by karmatp

Look at the booklets that came with the watch, it will explain how to self regulate your watch. By reading this, you will understand that a watch can gain or lose depending on how you lay it down at night. Once you get to know your movement better, you will understand it's personality and figure out ways to keep it more accurate. If your watch is losing 1 sec. a day, that is super accurate, and laying it a certain position at night can speed it up a bit if you like.

-4 +6 is within COSC specs, so 15 seconds in 7 days is great.

i've been laying it on the side lately for the past 3 days since i havent used it during the weekend maybe i'll have to lay it flat for a few nights thanks

[dannyny]

Originally Posted by karmatp

Look at the booklets that came with the watch, it will explain how to self regulate your watch. By reading this, you will understand that a watch can gain or lose depending on how you lay it down at night. Once you get to know your movement better, you will understand it's personality and figure out ways to keep it more accurate. If your watch is losing 1 sec. a day, that is super accurate, and laying it a certain position at night can speed it up a bit if you like.

-4 +6 is within COSC specs, so 15 seconds in 7 days is great.

the first week i got it it ran perfect didnt lose or gain anything at all

[Z-Sub]

it's normal, depending on wearing habit. for example, if I have to remove watch and put it in my pocket for several hours, it will run slower than if i have it on my wrist the entire time. I'm sure my watch lying on its side and not moving much in the pocket is the cause.

[RollieNZ]

Originally Posted by Lost Texan

Thank you all for the responses. from what i've gathered, a watch that looses one second a day will be 6 seconds behind at the end of the 6th day. Correct? And that is in "spec"?

I will watch it over the next few days. My activity varies. I have a desk job but i am very active when i'm up and i usually talk with my hands. i do sit a lot though.

Other than my wifes wedding band and engagement ring, i've never owned anything like this and i don't want to hurt it. on the otherhand, for the geedas that i spent on the watch, it shouldn't even think of messing up.

Thanks again,
John

I have the same model watch and noticed that it was losing a few seconds each day. I was taking it off each night before going to bed.

Then I decided to wear it 24/7 (less showering) and I notice it's now spot on.

I concluded that to get better accuracy you should wear the watch as often as possible.

[mike]

State of wind, wearing habits, positional variation can have an affect on a mechanical watch, and as stated every watch can vary..

[padi56]

Originally Posted by The GMT Master

It's supposed to be within -4/+6 seconds per day (as per chronometer parameters), the best thing to gauge that is to measure it over the course of a week rather than just one day

Not quite true the COSC spec is a AVERAGE of -4 to + 6 seconds over 24 hours. And in the COSC test watches can deviate by up to 10 seconds and still pass the COSC test,first column
is for Rolex size movements.You guys worry far to much over a few seconds,whats more important, is to wear your watch for the next few decades in good health.Now thats far more important than worrying over a couple of seconds.