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How long do a COSC cert last for
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Author:  breanach78 [ Wed Apr 07, 2010 11:48 am ]
Post subject:  How long do a COSC cert last for
Hi. just wondering does a COSC cert have any relevance to a older watch, say 10 years old, or it it only for a new watch. If so how long is it certified for. one year, two years etc????
Regards.
Author:  sharkman [ Wed Apr 07, 2010 11:56 am ]
Post subject:  Re: How long do a COSC cert last for
The movement is certified as within COSC specs at the time they tested it. It is what allows the watch to be called a chronometer. It should always be kept with all original paperwork.
But the COSC certification isn't a warranty. It doesn't have a time limit. It is your proof to subsequent owners the watch is a genuine chrononmeter.
Author:  breanach78 [ Wed Apr 07, 2010 12:06 pm ]
Post subject:  Re: How long do a COSC cert last for
Thanks. so if I test the time say over a day and its still in the allowances for a auto. chronometer ( I think +6 -6 seconds a day) Its still a accurate watch. Quartz is +=10 secs year.. New to auto and breitling. What would be a accectable tollerance for a Breitling, of 10 years. AD serviced. does it depend on movement i.e. wrist or winder. Collecting my watch next week and don t know what to expect..
Author:  sharkman [ Wed Apr 07, 2010 12:18 pm ]
Post subject:  Re: How long do a COSC cert last for
Soon I imagine Roff will chime in and all you need to know will be revealed. Me? I bought my first automatic movement last December.

If you are within +or- a few seconds a day, it's just right. If you wear it all the time you really needn't worry about a watch winder. Of course you know you can manually wind it, right? 40 cranks of the crown and it's fully wound. If you ever let it sit and it runs to stop, give it a good manual wind. Don't worry about overwinding it (though there is no reason to wind more than 40 cranks) since it has a "clutch" mechanism if you will. Something about where the mainspring attaches to the barrel or something (Roff where are you?!) that allows the spring to disengage when it is fully wound.

And I think if the watch is 10 years old you really want to hold onto the COSC certificate, because not all Breiltings were COSC certified then. Now they are.

Don't keep us in suspense - what did you get!! :poke:
Author:  breanach78 [ Wed Apr 07, 2010 12:45 pm ]
Post subject:  Re: How long do a COSC cert last for
Thank sharkman.. only learning. it says chronometer on the face... I have a problem that with the physical work I do It would be a crime to ware a watch of any value. So its a social watch. The tag and longines I have are great (But not Breitling!!!) just pick them up and go(quartz) usually drinking... so I need a winder. I believe the CAL.13 windes C.W. most nice winders I look at only wind both directions. is this any harm? The cheap ones wind CW for 1 hour and rests for 3 which I believe would be more suitable..Would it?
Author:  sharkman [ Wed Apr 07, 2010 12:56 pm ]
Post subject:  Re: How long do a COSC cert last for
A winder that winds in both directions won't hurt your watch. I have a couple inexpensive 6 watch winders that have 4 settings. They work fine but they do make some noise. I just shut them off at night. I hve mine set to wind 3 hours (5 minutes in each diection) and then rest 9 hours, which is more than enough. One hour on/3 off is also fine.

Now since you have a caliber13 we know it's a chronograph. What model did you get???????????????
Author:  breanach78 [ Wed Apr 07, 2010 1:07 pm ]
Post subject:  Re: How long do a COSC cert last for
I had a bit of a problem as only got to like nice watches recently.. ran out bought tag longines and weil blow about 3k on those. So since came in and left me with no option but a second hand B. I would not buy off eBay so I found a second hand chronomat two tone B13352 serviced and looking new from my local ABD. its was on a leather bracelet so i bought a SS pilot. I wish I came here first and spent all of it on a new Two tone chronomat. This is why i would like to know about winders or do they really matter. by the way any issues with cheap winders and magnetizing a watch. Maybe motors to close to the watch.
Author:  Iantheklutz [ Wed Apr 07, 2010 1:41 pm ]
Post subject:  Re: How long do a COSC cert last for
[quote="breanach78"]the allowances for a auto. chronometer ( I think +6 -6 seconds a day) quote]

COSC certification for mechanical movement is -4/+6 seconds a day.

A new watch will sometimes be out of COSC spec, but after 6-8 weeks the movement will "settle". A watch will begin to drift out of COSC when it is in need of a service. Slowing down or speeding up more than the COSC spec is mearly an indication that something in the movement is in need of attention (usually the oils breaking down).

Service for most Breitlings is recommended every 3-5 years but you may need a service before or after that period of time. Be sure to have a COSC certificate with your watch because it's always good to have all the papers :wink:

If you don't have the COSC certificate, you can contact Breitling and for a nominal fee they will provide you with a replacement.

Also, a winder that goes both directions might not harm the watch, but it might not necessarily give you the total number of turns per day required to keep the watch wound. You might find that your watch will slowly lose power and eventually completely stop, even on the winder.
Author:  breanach78 [ Wed Apr 07, 2010 1:49 pm ]
Post subject:  Re: How long do a COSC cert last for
Thanks... how about all the auto you see in shop windows that might not have been wound for up to.. say a year does the oils slow these?

Thank you for you posting..
Author:  Iantheklutz [ Wed Apr 07, 2010 2:11 pm ]
Post subject:  Re: How long do a COSC cert last for
It's possible. Sometimes a watch can sit up with 3 years before it get's shipped. My Cockpit was purchased near the beginning of 2010 and the stamped manufacturing date was in the 50th week of 2007! That's a lot of sitting around!

That's why you give it the "settle" period after you get your watch. Just to even things out and get the oils flowing again. The oils, in general, have a tendancy to stay in their place but do degrade with time.
Author:  breanach78 [ Wed Apr 07, 2010 2:31 pm ]
Post subject:  Re: How long do a COSC cert last for
another fascinating hobby for me.. I'm hooked..My ABD says the watch is serviced, that is to say in-house, obviously it will be worked on by a breitling trained watchmaker. Would this be class as a breitling service of does it have to go to a regional service center or even back to the factory to be classed as a "breitling" service.
Author:  sharkman [ Wed Apr 07, 2010 3:04 pm ]
Post subject:  Re: How long do a COSC cert last for
You can go to Amazon and get a great one watch winder - orbita sparta or bellino - from $150-$290. Any of these will work fine. They will be programable for direction and turns/day.

The cheapy multi watch winders I have will wind 2 minutes one direction - off for 6 minutes - 2 minutes same direction,etc.. This can be done for CW or CCW. Or the 3 hour run - 5minutes CC, 5 minutes CCW, etc.. for 3 hours, 9 hours off. I've never had the watches run down.

But if you just want a winder for one watch and you are concerned at all, you can get everything you need for under $300 and it will be high quality.

You should have maintenance repair issues looked at by your AD, but most stuff they will want to send to BUSA.
If the AD serviced it and it's running +/- a few seconds a day, there isn't a need to mess with more service.

You don't buy an automatic to keep pace with the atomic clock. :D It's about learning to appreciate that you have a complex, beautiful motor on your wrist. :bow: And every few days you can sync it to atomic time - it's like playing with a train set, except for the train part. :?
Author:  breanach78 [ Wed Apr 07, 2010 3:10 pm ]
Post subject:  Re: How long do a COSC cert last for
Dont forget SM I am in Ireland only 4 ABD in the country.....Very true about appreciation of a fine movement but I sure will miss checking the others off the official time once a month and been bang on to the second.......thanks for help. hopeful all will be well picking it up next week.
Author:  Roffensian [ Wed Apr 07, 2010 3:54 pm ]
Post subject:  Re: How long do a COSC cert last for
Well took me a bit longer than a few minutes Sharkman, but I made it.

If you don't want to hang around waiting for me to pronounce judgment ( :wink: ) you can always use the search function :!: :poke:

As stated the movement is chronometer certified outside of the watch (before the watch is assembled) and certified at that point - it's simply a snapshot. Once the watch gets into the real world there are all kinds of things that can affect the accuracy of the watch - the type of wear, the amount of time worn vs. resting, temperature changes, position of resting, etc, etc, etc. As a result, even after settling the watch can easily be out of the COSC specs of -4 / +6. The advantage with a COSC movement is that it should be capable of being regulated back to the COSC specs. If the watch can't maintain COSC specs then a service is needed - these days usually as a result of oil breakdown. If properly maintained by Breitling then the watch can maintain COSC specs for life - and that could be hundreds of years.

In terms of watchwinders, the Orbita website (www.orbita.net) has a database of watches with the direction and number of turns per day required to maintain the reserve (remember that watchwinders are designed to prevent the watch from winding down, not to wind it from no reserve). As long as you get the right number of turns in the right direction then no problem. You need to ensure that you have a winder with rest periods rather than one that runs constantly.
Author:  sharkman [ Wed Apr 07, 2010 4:47 pm ]
Post subject:  Re: How long do a COSC cert last for
See I told ya Roff would clue ya in. One thing that makes this forum so valuable is there are a handful of fellas who really know watches. And I mean really KNOW watches. Then there are guys like me who simply own a few and don't know much - BUT like to learn.

As for using the search function, Roff I thought you were the search engine here. :nana:
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