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Old 13 December 2017, 05:15 AM   #1
ssmith96
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+15/s a day...

My sea dweller that I just got from a local Rolex dealer/jeweler appears to be running nearly 15s fast in a day. I synced it exactly with my computer at 10am yesterday, and by 10am today, the time on the computer was changing at 15s mark instead of right on nose at 12.

I know a small variance is acceptable, but is this acceptable for a 1999 Sea Dweller?

I called and they said no problem to bring it in and they would adjust it, when I went in toady, a different woman, who I didn't speak to the day before said that Rolexs that are older aren't as accurate and that everyone knows this, then some other customer next to me said his loses a minute a day.

Don't know what the point of buying such an exacting and expensive instrument is if I need to adjust the time every few days.

Am I right to think it needs servicing or adjusting?

Regardless, they did take it in and are going to adjust it for me under warranty.
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Old 13 December 2017, 05:30 AM   #2
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-4 +6 is what the tolerance used to be (if I remember correctly). Has it ever been serviced? See how it does after they regulate it. If it keeps consistent time then it’s probably fine, if not have it serviced, IMO. Cheers and congrats on the SD!
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Old 13 December 2017, 05:36 AM   #3
ssmith96
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Originally Posted by mjclark32 View Post
-4 +6 is what the tolerance used to be (if I remember correctly). Has it ever been serviced? See how it does after they regulate it. If it keeps consistent time then it’s probably fine, if not have it serviced, IMO. Cheers and congrats on the SD!
Yeah, I had heard that was the standard, which is why I was surprised that one of them was insisting that it was okay.

If they don't fix it I might send it to RSC for a service and polish (since I intend on keeping this)
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Old 13 December 2017, 05:36 AM   #4
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It's good the piece came with a warranty. Have them regulate it first.
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Old 13 December 2017, 06:01 AM   #5
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Checking it with your "computer" is not a very good check. Computers update periodically from whatever source they are receiving a signal from and can jump around quite a bit.

A '99 Rolex should be able to be regulated to within a couple of seconds a day, either way. It may have a slightly different variance when worn on the wrist though.
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Old 13 December 2017, 06:13 AM   #6
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Quote:
Originally Posted by ssmith96 View Post
My sea dweller that I just got from a local Rolex dealer/jeweler appears to be running nearly 15s fast in a day. I synced it exactly with my computer at 10am yesterday, and by 10am today, the time on the computer was changing at 15s mark instead of right on nose at 12.

I know a small variance is acceptable, but is this acceptable for a 1999 Sea Dweller?

I called and they said no problem to bring it in and they would adjust it, when I went in toady, a different woman, who I didn't speak to the day before said that Rolexs that are older aren't as accurate and that everyone knows this, then some other customer next to me said his loses a minute a day.

Don't know what the point of buying such an exacting and expensive instrument is if I need to adjust the time every few days.

Am I right to think it needs servicing or adjusting?

Regardless, they did take it in and are going to adjust it for me under warranty.
Try using time.is for your control.
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Old 13 December 2017, 06:20 AM   #7
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+-15 is a bit much. Fast is preferable since you only have to pull the crown to retain accuracy and not advance the time. If it's consistent it's no big deal for them to calm it down a bit.
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Old 13 December 2017, 06:22 AM   #8
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Think COSC is -2/+4

15 is way too high and the reps explanation is nonsense.
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Old 13 December 2017, 06:26 AM   #9
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Quote:
Originally Posted by mjclark32 View Post
-4 +6 is what the tolerance used to be (if I remember correctly). Has it ever been serviced? See how it does after they regulate it. If it keeps consistent time then it’s probably fine, if not have it serviced, IMO. Cheers and congrats on the SD!
This...exactly.

The statement that "older Rolexes aren't as accurate" is a total crock of sh*t. Ridiculous to say the least. And, unfortunately, not rare in the world of Rolex sales.
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Old 13 December 2017, 06:27 AM   #10
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Think COSC is -2/+4

15 is way too high and the reps explanation is nonsense.
x2 I just hope they know what they're doing when they take the back off.. if they get that far. With nonsense like that I'd be tempted to live with it until you find someone who knows what's what. It's a cheap fix.
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Old 13 December 2017, 07:06 AM   #11
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I expect a proper regulation should get close to COSC.
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Old 13 December 2017, 07:15 AM   #12
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Definitely don't just use your computer clock, that isn't reliable.

Check it over at least a few days, checking in daily and keep track of it using time.is or time.gov. I always make sure I refresh the page and don't just use the one that has been open for a long time.

See where you're at. If it's still 15s off then I would have it looked at because that would be too much for me. COSC of -4 to +6 should be easy to achieve.

You can also play with resting position overnight if you take if off. Some positions run faster or slower, though modern Rolex watches don't seem to move much. My Sub runs a touch slow on my wrist (-.1/3s) but when I rest it crown down at night it gaines some back and I've been averaging about +.4s per day over the last month...and that is consistent, I check it each morning and it's always just barely creeping ahead at around that .4s/d.
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Old 13 December 2017, 08:11 AM   #13
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Quote:
Originally Posted by tbonesteak View Post
Think COSC is -2/+4

15 is way too high and the reps explanation is nonsense.
COSC is -4/+6
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Old 13 December 2017, 09:17 AM   #14
ssmith96
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So far resting position hasn't made any notable difference, in the position Rolex suggests to lose speed, it still speeds up.

It is in for service with them right now for a regulation. I'll update when I get it back.
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Old 13 December 2017, 10:10 AM   #15
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Yeah, way too fast. Older Rolexes can certainly be regulated to within CoSC. My 2001 Sub is within 0.5 sec/day or better on my wrist, although I do position it to regulate over night.
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Old 13 December 2017, 11:14 AM   #16
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To fast that would bother me if adjusting doesn't solve the issue then I would have it serviced..
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Old 13 December 2017, 04:41 PM   #17
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If you use smartphone, one app that I can suggest to check your watch with is Emerald Time. It's free.
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Old 13 December 2017, 04:45 PM   #18
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See post 5.
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Old 14 December 2017, 03:31 AM   #19
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+15 wouldn't bother me.
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Old 14 December 2017, 03:38 AM   #20
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OP, a 24 hour time period isn't enough time to properly evaluate the timing. Wear it normally for at least a week and average the rate variance.
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Old 14 December 2017, 03:40 AM   #21
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This...exactly.

The statement that "older Rolexes aren't as accurate" is a total crock of sh*t. Ridiculous to say the least. And, unfortunately, not rare in the world of Rolex sales.
Exactly. My 67' 5513 ran spot on, as good as any of my modern
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Old 14 December 2017, 03:43 AM   #22
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That's a 3135 movement, capable of +1 s/day consistently.
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Old 14 December 2017, 03:51 AM   #23
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I sync with time.is and I use an app called Toolwatch to check daily variance. Seems to keep me sane now
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Old 14 December 2017, 05:11 AM   #24
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Time.gov is official NIST time in the US. The site is compensated for internet delay. I swear by it.
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Old 14 December 2017, 05:34 AM   #25
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I sync with time.is and I use an app called Toolwatch to check daily variance. Seems to keep me sane now
Use time.is too.
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Old 15 December 2017, 08:42 AM   #26
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+15 sec per day means aprox. 99,97% accuracy BUT for a Rolex it’s too much!!
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Old 15 December 2017, 09:12 AM   #27
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My Datejust 41 is running about +4 to 5 seconds a day also. It’s bothering me, but I am not too crazy about sending it in to service just for that...
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