Accuracy Question

[GEZ7ch]

Hello all.

A small question here, my Explorer usually keeps time in -1 sec a day.

Yesterday I set the time at 12:00:00 pm according to atomic time softwere, I only winded it with 10 crown turn and it was on my hand for 12 hours, the I took it off for 12 hours, after those 12 hours it's suddenly -4 sec....
Is it normal? does the spring getting looser affect the accuracy, means, as longer the watch off your hand it keeping time less accurate?

Answers appriciated,

[Andad]

Hi,

Lots of things can influence accuracy. I wouldn't judge it over just 24 hours. Rolex testing takes more than two weeks. Set it to a time server, wear it for a few weeks and check it with the same server. This will give you the information you need.

[GEZ7ch]

Originally Posted by directioneng

Hi,

Lots of things can influence accuracy. I wouldn't judge it over just 24 hours. Rolex testing takes more than two weeks. Set it to a time server, wear it for a few weeks and check it with the same server. This will give you the information you need.

Hm.....on this case maybe shouldn't I care to much about the accuracy since I only wear it on weekends and special occasions....so as long as it shows the right hour and minute during the time I wear it i'm good, or should I care?..

[padi56]

Originally Posted by GEZ7ch

Hello all.

A small question here, my Explorer usually keeps time in -1 sec a day.

Yesterday I set the time at 12:00:00 pm according to atomic time softwere, I only winded it with 10 crown turn and it was on my hand for 12 hours, the I took it off for 12 hours, after those 12 hours it's suddenly -4 sec....
Is it normal? does the spring getting looser affect the accuracy, means, as longer the watch off your hand it keeping time less accurate?

Answers appriciated,

You guys and your watches and worrying over a few seconds and all perfectly normal for any mechanical watch.Now in 24 hours, the escapement of a mechanical watch pushes the gears 432,000 times. Since a day has 86,400 seconds, even a watch that runs five minutes fast or slow each day has an accuracy of over 99.6 percent! A finer mechanical watch that gains or loses about six to nine seconds a day or about a minute a week has a breathtaking precision of over 99.99 per cent. This is very high precision, given the fact that the movement is constantly affected by the earth's gravity, metal expansion and contraction, temperature variations, subtle changes in lubrication and friction, shocks, and so on.The fact is that no mechanical watch made will keep perfect time, very close yes but perfect no.So Just wear your watch for the next few decades in good health.Now thats far more important that worrying over a few seconds I can assure you.Try resting your watch flat dial up might gain back a few seconds overnight

[Tools]

Hi GEZ7ch.

Don't worry about it..

However, when you put it first on, give it a full 40 winds......... This allows the works to have the benefit of full torque and pressure on the gear-train for most consistent operation..

..............

[weizhen77]

Hi GEZ7ch,

Try do a search with keyword "accuracy", there is a lot of discussions on this topic in the past. I'm quite an accuracy freak too

Two weeks had passed, very lucky that my two weeks old Explorer I is spot on. For the two weeks, I wore it every hours, parted with it on bedside table every nights with crown up(to lose a few seconds).

[padi56]

Originally Posted by weizhen77

Hi Czech,

Try do a search with keyword "accuracy", there is a lot of discussions on this topic in the past. I'm quite an accuracy freak too

Two weeks had passed, very lucky that my two weeks old Explorer I is spot on. For the two weeks, I wore it every hours, parted with it on bedside table every nights with crown up(to lose a few seconds).

So let me get this straight your watch is spot on,yet you say you put your watch crown up to lose a few seconds.So is your watch self regulating the amount in seconds gained in the day overnight.

[weizhen77]

Originally Posted by padi56

So let me get this straight your watch is spot on,yet you say you put your watch crown up to lose a few seconds.So is your watch self regulating the amount in seconds gained in the day overnight.

In fact I'm quite confused too

Since it is "spot-on" for today, wonder what position I should put tonight