Unbelievable Accuracy

[Mac-427]

I reset my 6 digit (block head) Submariner, purchased in November, 2019 in March to correspond with daylight savings time and haven't set it since. The watch is currently 5 seconds slow! Needless to say, I'm not interested in the new movement in the 20/20 Submariners.

[Gerardus]

Originally Posted by Mac-427

I reset my 6 digit (block head) Submariner, purchased in November, 2019 in March to correspond with daylight savings time and haven't set it since. The watch is currently 5 seconds slow! Needless to say, I'm not interested in the new movement in the 20/20 Submariners.

Good result! I like the expression "block head" BTW (could be a good nick name!)

[Alfredo.]

Wow!!

[C0d]

Insane! WOW! Makes me want to own one too.

[padi56]

Originally Posted by Mac-427

I reset my 6 digit (block head) Submariner, purchased in November, 2019 in March to correspond with daylight savings time and haven't set it since. The watch is currently 5 seconds slow! Needless to say, I'm not interested in the new movement in the 20/20 Submariners.

Yes unbelievable accuracy you must have a movement in 10000000,and no matter the movement, or brand of watch its only as good as what its been regulated to that matches there owners daily wearing resting paten..

[bmb15]

Originally Posted by padi56

Yes unbelievable accuracy you must have a movement in 10000000,and no matter the movement, or brand of watch its only as good as what its been regulated to that matches there owners daily wearing resting paten..

I share that view to 100%.

Rolex regulates new and serviced watches always to run a bit too fast, about 1-3 s/d. If this deviation remains linear with time, i.e. over days, weeks, months, then you have a perfect mechanical watch, despite the fact that - with +2 s/d - you would deviate +1 min/month. Don't forget that this is a deviation of only 23 microseconds/s.

In addition the rate (s/d) is position and amplitude dependent. Therefore, your measured deviation over a long period also depends on how you wear the watch and in which position it remains over night. One also needs a precise and reliable reference clock to compare with.

If somebody wants a super precise watch, then either buy a quartz or a Caesium Atomic Watch

[thenewrick]

I bought my first mechanical watch about 6 months ago; a Tissot Gentleman Powermatic 80 Silicium.

I had read about accuracy but never experienced it in real life. My friend got a Hamilton Khaki at the same time.

Mine had some variance the first couple of months but then hit a stride of being +- .5 a day and staying around zero after 4 months and I thought that was great. I was surprised to read of people with Rolex and new Omega who would lose 1-2 seconds a day and be at -30 seconds after a month. My friend's Hamilton would gain or lose about 5 seconds a day consistently.

I've already prepared myself for my new 32xx movement Rolex not being as accurate as my $500 Tissot but I'm hoping for the best. I don't mind if it's like +.5 a day and I can just hack the seconds once a week and get it back on track but -2 a day would be a real bummer for me.

[skyblue12]

My June 2020 Sub runs about a second slow per day so mines not as accurate, I wish it was. Hopefully it will settle down.

Sent from my SM-G965F using Tapatalk

[padi56]

Originally Posted by skyblue12

My June 2020 Sub runs about a second slow per day so mines not as accurate, I wish it was. Hopefully it will settle down.

Sent from my SM-G965F using Tapatalk

You mean your not happy with 99.99% accuracy remember there are 86400 seconds in a day. Its mechanical and no mechanical watch no matter the brand or price will be 100% accurate.

[strafer_kid]

Originally Posted by skyblue12

My June 2020 Sub runs about a second slow per day so mines not as accurate, I wish it was. Hopefully it will settle down.

Sent from my SM-G965F using Tapatalk

One second a day is pretty good in the grand scheme of things.........

[Calatrava r]

Originally Posted by skyblue12

My June 2020 Sub runs about a second slow per day so mines not as accurate, I wish it was. Hopefully it will settle down.

Sent from my SM-G965F using Tapatalk

A second per day off is really quite incredible when you think about it for a mechanical watch. Amazing watch movements can be so precise.

[TTalk]

That’s pretty darn good. I lose about 3 minutes every 4 months with my 116610LN that I wear every day.

[szabo_martin]

Im impressed too, my YM42 hasn't lost or gained a second in a week. My deepsea same movement loses about a second a day

[WiseRat]

Very impressive. To be fair, losing or gaining 1 second per day is still incredible accuracy for any mechanical movement. COSC Chronometer average daily rate limits are -4/+6 sec/day.

[Maxy]

Originally Posted by Mac-427

I reset my 6 digit (block head) Submariner, purchased in November, 2019 in March to correspond with daylight savings time and haven't set it since. The watch is currently 5 seconds slow! Needless to say, I'm not interested in the new movement in the 20/20 Submariners.

Great accuracy there! Enjoy the block head!

[thenewrick]

COSC needs to be more strict. -4/+6 is a bit trash these days from what I've seen. If a $500 watch is +2/-2 a day without any certification it sort of makes a COSC certification worthless; except it's actually a big cost additive.

[padi56]

Originally Posted by thenewrick

COSC needs to be more strict. -4/+6 is a bit trash these days from what I've seen. If a $500 watch is +2/-2 a day without any certification it sort of makes a COSC certification worthless; except it's actually a big cost additive.

Hardly trash I sometime wonder if some of you guys actually know how a mechanical movement works. Remember this the escapement of a mechanical watch in 24 hours pushes the gears 432,000 times and a day has 86400 seconds. And when they test watches at the COSC to get the certification in a controlled environment which is quite different to when on the wrist. On the wrist there are many variables to overcome given the fact that the movement is constantly affected by the earth's gravity, metal expansion and contraction, mainspring power-reserve, temperature variations, subtle changes in lubrication and friction, shocks, and so on. The plain simple fact no purely mechanical watch made at any price or brand will keep perfect time, very close yes but perfect no

[Oxfordian]

Originally Posted by padi56

Hardly trash I sometime wonder if some of you guys actually know how a mechanical movement works. Remember this the escapement of a mechanical watch in 24 hours pushes the gears 432,000 times and a day has 86400 seconds. And when they test watches at the COSC to get the certification in a controlled environment which is quite different to when on the wrist. On the wrist there are many variables to overcome given the fact that the movement is constantly affected by the earth's gravity, metal expansion and contraction, mainspring power-reserve, temperature variations, subtle changes in lubrication and friction, shocks, and so on. The plain simple fact no purely mechanical watch made at any price or brand will keep perfect time, very close yes but perfect no

Thanks for this info, concise and useful. I do believe that there are some who expect perfection from their mechanical timepiece especially as the price rises. My 10 year old Seamaster is the most inaccurate at around 4-5 seconds a day but still well within spec for its movement. All my other watches are less than that and get adjusted at the end of the month when worn for long periods. My DJ is the most accurate maybe a second a day which is just awesome.

[mountainjogger]

Originally Posted by thenewrick

COSC needs to be more strict. -4/+6 is a bit trash these days from what I've seen. If a $500 watch is +2/-2 a day without any certification it sort of makes a COSC certification worthless; except it's actually a big cost additive.

Trash?

I love my $19 Casio dive watch. And it is more accurate than most Rolexes. But if you are don't understand why I like my sub better...

Do some reading about the history of watchmaking.

Or, go to a museum and compare the originals hanging the gallery with the copies available for a fraction of the cost in the gift shop.

Stay safe.

[sgwatchguy]

Originally Posted by mountainjogger

Trash?

I love my $19 Casio dive watch. And it is more accurate than most Rolexes. But if you are don't understand why I like my sub better...

Do some reading about the history of watchmaking.

Or, go to a museum and compare the originals hanging the gallery with the copies available for a fraction of the cost in the gift shop.

Stay safe.

Well said.

[thenewrick]

My expectations are pretty high just because I'm new to the mechanical watch world. It's like buying a brand new car and then looking at the specs of something from 2001.


*I'm a bit of a movement nerd and I'm pining over the new GS 9RA5.

If this watch wasn't so thick, and didn't have the 4'o clock date window, I'd be all over it:

https://www.grand-seiko.com/us-en/ne...se/20200305-10

[Jpccarguy]

Originally Posted by thenewrick

My expectations are pretty high just because I'm new to the mechanical watch world. It's like buying a brand new car and then looking at the specs of something from 2001.


*I'm a bit of a movement nerd and I'm pining over the new GS 9RA5.

My GS SBGA031 was my first non-Rolex acquisition, attractive because of the spring drive and titanium case & bracelet. It's +0.3 seconds per day, very happy with it. But it's still not a Rolex. The date change takes over an hour, the clasp is nowhere near the quality of a Rolex, and it will never keep its value like a Rolex. But I love the novelty of it- the exception that proves the rule.

[Smobews]

my SD43 consistently tracking -0.3 spd since March

[Dahh]

I feel like getting one right now. Wow!!

[TswaneNguni]

The 3135 is a LEGEND

[Dirt]

Originally Posted by TswaneNguni

The 3135 is a LEGEND

[padi56]

Originally Posted by TswaneNguni

The 3135 is a LEGEND

Yes but so were the 12,series ,15 series,30 series and basically all the Rolex movements if regulated could match the 3135 in terms of accuracy and reliability.

[pikers]

That's impressive! The longest I've worn a single watch in my collection is a month straight, that was my 16570 Polar with 3186 (recently serviced). After an entire month it was +3 seconds which blew my mind. The 31XX movements are no joke. No wonder they've been around for years.

[ffscala]

Just had my 15 year old Explorer II regulated and it has been running at +-0, no joke. Such an old movement running like this is just a joy to behold.

[Kevin of Larchmont]

Smaller dataset but my new DJ36 has gained five seconds in 23 days, all of it when off the wrist. It took nine days of consecutive wearing to lose it’s first second before I started wearing other watches, about 2.5 days total off the wrist not including sleep. So far it’s the most accurate Rolex I’ve owned but it sounds like that’s destined to change. I’ll worry about that later. Right now I’m all smiles.