New SD43 -9s/day

[bmclaurin]

I acquired a BNIB SD43 several days ago. I’ve noticed it has consistently lost about 9 seconds per day. It has been on my wrist all day each day but rests on my nightstand (crown up) while I sleep. I understand that crown up orientation generally causes the watch to slow a bit, and I haven’t yet tried face up, etc. But -9s/day seems significantly out of spec for a new watch. Seems to me I should send it to RSC for service (hopefully to be covered by warranty). Would you guys do the same? Thanks.

Edit: I will certainly try different resting positions before sending it to RSC.

[GreatScott]

Yes, mine is spot on

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[LPan]

Originally Posted by bmclaurin

I acquired a BNIB SD43 several days ago. I’ve noticed it has consistently lost about 9 seconds per day. It has been on my wrist all day each day but rests on my nightstand (crown up) while I sleep. I understand that crown up orientation generally causes the watch to slow a bit, and I haven’t yet tried face up, etc. But -9s/day seems significantly out of spec for a new watch. Seems to me I should send it to RSC for service (hopefully to be covered by warranty). Would you guys do the same? Thanks.

Edit: I will certainly try different resting positions before sending it to RSC.

Absolutely, there is no way it should be losing anything like that. +/-2 secs per day is the max I believe.

[Uncle00Jesse]

Yes let RSC have a look at it. Mine is -2 no matter the position. That would bother me

[tudorbaja27]

Give it a month to settle. If it still acts up then send it in.

[tudorbaja27]

Originally Posted by LPan

Absolutely, there is no way it should be losing anything like that. +/-2 secs per day is the max I believe.

It's a new watch - typically they need time to settle.

[bkatx]

Originally Posted by tudorbaja27

Give it a month to settle. If it still acts up then send it in.

Agreed. And yes resting it crown up will slow it down. But not that much. All the Rolex I've had are very consistent regardless of position.

[al503]

Originally Posted by tudorbaja27

Give it a month to settle. If it still acts up then send it in.

My SD 43 will lose a little less than a second per day crown up. It'll gain about the same dial up so I doubt you'll make up anything close to ~9 seconds.

However, I agree that it will take a while for it to settle down. Both of my 32xx movements needed a couple of months.

[Mystro]

That's horrible. The new movements dont "settle in" more than maybe .50 of a second if any at all. Its so out of spec there is nowhere to go but send it back in. That movement is capable of almost being perfect for a week or longer. Resting positions I have tested on a few new movements only deviate by 0.50 of a second overnight to even less than that. First of all, makes sure you wound the watch 60+ times and then test.

[ltmgeller]

I’d wear it a little longer before sending it in.

[Nikrnic]

Yes, I'd give it a month.

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[samson66]

let it run out completely, leave it overnight stopped, then fully wind the next day. See if anything changes. If not, send it in.

Agree with above about giving it a few weeks first before sending in.

[Bigblu10]

Originally Posted by bmclaurin

I acquired a BNIB SD43 several days ago. I’ve noticed it has consistently lost about 9 seconds per day. It has been on my wrist all day each day but rests on my nightstand (crown up) while I sleep. I understand that crown up orientation generally causes the watch to slow a bit, and I haven’t yet tried face up, etc. But -9s/day seems significantly out of spec for a new watch. Seems to me I should send it to RSC for service (hopefully to be covered by warranty). Would you guys do the same? Thanks.

Edit: I will certainly try different resting positions before sending it to RSC.

Wind it up at least 40 turns and check it daily with Time.gov It is official NIST time in the USA and website is adjusted for network lag. Give the watch at least 2 weeks before you decide to send it in.
Be aware this is the holiday season, and regarding RSC you might be without the watch for longer than you wish.

[padi56]

Originally Posted by bmclaurin

I acquired a BNIB SD43 several days ago. I’ve noticed it has consistently lost about 9 seconds per day. It has been on my wrist all day each day but rests on my nightstand (crown up) while I sleep. I understand that crown up orientation generally causes the watch to slow a bit, and I haven’t yet tried face up, etc. But -9s/day seems significantly out of spec for a new watch. Seems to me I should send it to RSC for service (hopefully to be covered by warranty). Would you guys do the same? Thanks.

Edit: I will certainly try different resting positions before sending it to RSC.

Just because you are wearing the watch dont mean you are winding the watch,its wrist movement that winds the watch.Before rushing out give it a full manual wind at least 40 full crown turns clockwise only.Then set time with reliable time source with reasonable wrist movement then wear for 8 hours plus a day.Check time once only daily with same setting source write down lose or gain do this for 7 days .After the 7 days average out the lose or gain for a more accurate result.If then if way out of spec get watch regulated this will take around 3-4 weeks by RSC before its returned.

[Pol1]

Here spot on as well.

[uansari1]

Send it in. Despite what some say, these movements don’t really need to settle. According to Rolex, each piece is regulated to +/- 2 seconds AFTER casing before it leaves the factory.


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[Fraz]

I wouldn't rush to open up a new watch. I would wait at least a month to see if this behavior changes. You have five years of warranty, I don't thinks there is any reason to rush.
Good luck!

[padi56]

Originally Posted by uansari1

Send it in. Despite what some say, these movements don’t really need to settle. According to Rolex, each piece is regulated to +/- 2 seconds AFTER casing before it leaves the factory.


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Thats correct but just like when they test the bare uncased movement on a machine at the Swiss COSC to get its certification at time of testing only to say its passed at a average -4+6 seconds.Then Rolex tests again possible hundreds at a time on a machine to this new -2+2 spec and just like the COSC test on machine to say its passed.But on the wrist there are many many variables,like temperature,gravity,mainspring power-reserve,wearing habits,subtle changes in lubrication and friction, shocks,and so on.Plus a day has 86400 seconds for any movement to run within a few seconds is truly a mechanical marvel.Some on forum wanting to get watch serviced for running 2.5 seconds fast,others bragging there watches are 1 second a day fast. Surely if running 1 second fast is out of the Rolex advertised spec -2+2 spec,or is it only god forbid its running one or two seconds over Rolex stated spec thats extremely evil.

[LuminousMaximus]

if you send it under the warranty it will be fixed but will take time, maybe 2 months

If you send it in to independent service person like Ric, it will be done relatively fast, but you will have to pay

If you like just add 1 minute every Sunday to a watch that is 1 minute fast and every Sunday you will be on time...

You can thank me later...

[bradyb]

As others are saying, let it run down a few times and restart. Give it at least a month before sending in.

[bmclaurin]

Some really great counsel here, guys. Thanks a bunch. I’m going to follow the many suggestions to wait it out for at least a little while. I’ll try letting it run down completely a few times, as suggested by many. If no improvement, then it’s off for service. Would just need to decide between RSC (likely no cost, warranty repair, but takes a while) and an independent servicer (will cost money but likely much quicker).

Thanks again for the great advice.

[uansari1]

Originally Posted by padi56

Thats correct but just like when they test the bare uncased movement on a machine at the Swiss COSC to get its certification at time of testing only to say its passed at a average -4+6 seconds.Then Rolex tests again possible hundreds at a time on a machine to this new -2+2 spec and just like the COSC test on machine to say its passed.But on the wrist there are many many variables,like temperature,gravity,mainspring power-reserve,wearing habits,subtle changes in lubrication and friction, shocks,and so on.Plus a day has 86400 seconds for any movement to run within a few seconds is truly a mechanical marvel.Some on forum wanting to get watch serviced for running 2.5 seconds fast,others bragging there watches are 1 second a day fast. Surely if running 1 second fast is out of the Rolex advertised spec -2+2 spec,or is it only god forbid its running one or two seconds over Rolex stated spec thats extremely evil.

Completely agree on your points. But I would imagine that 9 seconds off is not entirely due to the variables you mentioned, and likely a combination of those variables and being out of spec....no?


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[Fraz]

Originally Posted by bmclaurin

Some really great counsel here, guys. Thanks a bunch. I’m going to follow the many suggestions to wait it out for at least a little while. I’ll try letting it run down completely a few times, as suggested by many. If no improvement, then it’s off for service. Would just need to decide between RSC (likely no cost, warranty repair, but takes a while) and an independent servicer (will cost money but likely much quicker).

Thanks again for the great advice.

Would the warranty be voided if you sent the watch to an independent watchmaker? Does anyone know?

[albmich]

Agree w everything said above. Mine ran weird for the first 3 weeks. Give it 40 winds, wear it at least 8 hrs a day, wait another 3-4 weeks. Then reassess

[eltonbalch]

The OP says it’s a BNIB Watch which (I assume) means a previous owner. If that’s the case, the watch has had time to “adjust”. As others suggested, winding it up completely and then checking it over a few days is a good idea but I’m guessing it won’t change the outcome.

[darkside7]

How are you timing your watch?

[The Libertine]

A watch running consistently slow at -9 seconds equals a minute slow per week; yes, I would send it in. If it was running fast would not be so much of an issue because it would be easier to regulate by simply pulling out the crown; however, if running slow, need to hack the movement to bring on-time.

[bmclaurin]

I spoke with Rikki at Time Care Inc., and he advised me to send it to the RSC (due to warranty coverage). I’m probably going to hang on to it over the next month or so since the RSC shuts down 12/21 to 1/7 for the holidays and observe the watch over that period and then send it in if it’s still running slow.

[Rilz]

I would also wait for wait a month, it is a new watch it takes time to settle.

[gt0279a]

From what I understand, the modern movements really do not deviate much based on position left overnight vs. the older calibers.