17 days, @ 3 temperatures , in 6 positions, before their cased .

Yours is super accurate , my spring drive diver is also super accurate less than 1 second off the atomic clock since March 12 , 2017 daylight savings when I last set it.

It will not be as accurate as your SBGX115 9F though, LOL.

 

My SBGH high beat is running a crazy +5 seconds in ONE MONTH, but I haven't taken day by day measurements. All three of my spring drives are running like quartz watches.

I wish Grand Seiko would produce automatic four hertz watches in 39 to 40mm case sizes. But I wonder if the executives think this would eat into their hi-beat sales. Guessing that the manufacturing tolerances for the hi-beat and the standard automatic movements are identical, it probably doesn't cost more to produce the hi-beat movement which Grand Seiko charges a big premium for.

 

So, I knew these were supposed to be more accurate than most, but I've been quite pleased with what I've experienced the first 5 days wearing my SBGH001. Over 5 days, 7 data points, averaging -0.2spd. Is this normal?? Feeling very fortunate and impressed either way!

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I think those numbers are remarkable, a real tribute to GS's regulation. It is adjusted for your wearing habits!

In my experience, watch accuracy wanders over the long term, watches gradually slow or speed up. Long term meaning months or seasons.
I am curious to see whether your GS high-beat maintains this terrific performance.

 

I look forward to finding that out as well!

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My SBGH001 has been very accurate, although not that accurate.

 

Mine were not so accurate, as bad as +7 in some positions.

 

Had to weigh in again. The engineer in me wants a watch to keep time as perfectly as possible.

But, with 9 watches in the rotation, none is worn for more than a week (the worst-behaved gains about 10 sec/day).

So the timekeeping error by the end of a turn in the rotation is at most a minute. That's not consequential for my life (I'm a lawyer, not a pilot or sailor).

I'm still DAMN jealous of OP's great high-beat. Enjoy it!

 

My experience with GS Automatic is they were accurate when new... but the accuracy runs after few months of use. In my case, about 10 months of daily wear.

 

5 days? That's hardly anywhere near meaningful in the course of the life of a well made watch, which last decades.

In my experience, you can expect very good accuracy from most well respected names (including but not limited to GS, Rolex, Tudor etc)...regardless of movement. But to get extremely high accuracy (1-2 sec over months) from mechanical watches it's probably luck of the draw.

My Tudor Ranger (ETA 2824-2 based movement) has been extremely accurate...it was synced to atomic clock back in November '16 and it is still within a couple seconds from actual time. While my GS and Rolex pieces are all running within 2 sec a day average....and I've owned all these pieces since new for over two years.

But then again, I wouldn't be surprised if OP's Highbeat performs well. It's supposed to.

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5 days? That's hardly anywhere near meaningful in the course of the life of a well made watch, which last decades.

I'll try to make my next post more meaningful. Thank you for your thoughtful response.

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Man, those are awesome results! My SBGJ021 is running at +3 spd right now.

Not bad, but nowhere near as accurate as yours. My Snowflake is right at +1 second per week or so.

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I'd be fine with +3 if that's what it eventually settles into! GORGEOUS SBGJ021 by the way.

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Thanks!

I was actually trying to decide between this and a white Datejust 41. Really like the Datejust but was offered a great deal on the SBGH001 and took it. Thinking.....I'll go compare it to the Datejust (no GS AD here) and, if I find the GS wanting, I'll return or sell. BUT I knew as soon as I opened the box that I'd be keeping the Hi Beat. Now I'm trying to decide if the additional funds should go to another GS...or if I should add a bit to it and still get the Datejust....decisions, decisions....


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Thanks!

I was actually trying to decide between this and a white Datejust 41. Really like the Datejust but was offered a great deal on the SBGH001 and took it. Thinking.....I'll go compare it to the Datejust (no GS AD here) and, if I find the GS wanting, I'll return or sell. BUT I knew as soon as I opened the box that I'd be keeping the Hi Beat. Now I'm trying to decide if the additional funds should go to another GS...or if I should add a bit to it and still get the Datejust....decisions, decisions....

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I don't know... personally I've never warmed to the "contemporary size" (read larger) Datejusts. Despite the usual hurray and what not on forums, I still prefer the Datejust in 36mm. It's the perfect proportion for a semi dressy sport watch and they made it for so long they've nailed it in terms of proportions in the hands/dial/indices/bezel department.

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My Hi-Beat is +2 per day, my mechanical is at <1 per day average over the course of a couple of weeks of daily wear. My Spring Drives are awesome and my quartz put them to shame. With the Automatics and the mechanical it is the luck of the draw, and yours is probably not the norm from what I have read.

Pretty awesome timing on your Hi-Beat. I am envious.

 

My SBGJ203 is running at +1 SPD. Pretty good!

Looking forward to getting my first GS Quartz.

 

Thought I'd post an update on this. A few days ago my SBGH001 mysteriously went from loosing around half second a day...to gaining 3-4 seconds per day. It is still in spec, and I'm fine with that level of accuracy, but it is odd that it changed that much over night. Wearing habits, storing position, temperature, etc have remained constant.

Again, not a complaint necessarily, just an observation. Still very much honeymooning with this watch.....a new SBGM021 arrives tomorrow though...so the honeymoon may be coming to an end...


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Such good accuracy is typical of HAQ performance in other brands as well, some much more affordable too.

Certina DS-2 Precidrive HAQ chrono

Think this Certina is the least expensive official HAQ, although I consider the Bulova Precisionist nearly as accurate, less expensive, but not officially a HAQ because the Bulova lacks the temperature compensation TC of the Certina. All of them are under +1 spd.

Bulova Chronos

 

A lovely collection, i greatly admire.

 

A GS isn't just a watch...Your relationship has only just begun. He needs to get used to your wrist, your arm hairs, your drive to work, etc...Let it settle in a bit. After two years or almost constant use and abuse, mine is still at -2 sec/day. We've accepted each other, like an old couple, and don't expect anything more from one another :-!:-!

 

While most people on this forum prefer mechanical watches, I've always preferred quartz. But a few years ago my enjoyment of mechanicals greatly increased when I took up regulating them. It's easy, and very satisfying. I've regulated most of my ETA mechanicals within 2 seconds per day - on my wrist. But I've also found that ETA's run 10 or 15 seconds per day faster lying flat, that on my wrist. So when considering accuracy, pay attention to this issue.

 

Precise - I have watches with ETA 2895-2, 2804-2, 2836-2 and 6498-2 movements
None of them run more than a second or two differently when worn daily vs. sitting flat.
So, as always, YMMV.
I am impressed that you are regulating your watches. I did two of mine and concluded my hands are not steady enough to risk damaging the hairspring.
(rereading this, I have to apologize for perpetuating a thread hijack).

 

OP here..no worries.

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I've been into watches some 65 years now
All brands, functions etc.
But when it comes to spot on accuracy, the
most accurate I've owned in 65 years is the
Casio GW3000bb1. Solar Multiband 6. Often
no variance with WWV Ft Collins, Co Solar
clock. But on some occasions, prior to sych
+1 or 2 Sec. But stepper motors in watch
take care of that at sta time synch.

X Traindriver Art

Atomic time shames Depot Station RR Clocks.
But they were mechnical.

 

So, I knew these were supposed to be more accurate than most, but I've been quite pleased with what I've experienced the first 5 days wearing my SBGH001. Over 5 days, 7 data points, averaging -0.2spd. Is this normal?? Feeling very fortunate and impressed either way!

17 days, @ 3 temperatures , in 6 positions, before their cased . Yours is super accurate , my spring drive diver is also super accurate less than 1 second off the atomic clock since March 12 , 2017 daylight savings when I last set it.

My SBGH high beat is running a crazy +5 seconds in ONE MONTH

My Hi-Beat is +2 per day, my mechanical is at <1 per day average over the course of a couple of weeks of daily wear. .

My SBGJ203 is running at +1 SPD. Pretty good!

After two years or almost constant use and abuse, mine is still at -2 sec/day. :-!:-!

Chalk me up as another "crazy" one (timing results here), then. Unless, of course, GS underrates their movements and we're not really "outliers" at all ;-)

 

Sorry for bringing this thread from the dead. Have had my hi-beat for almost 2 weeks and have been tracking accuracy via Atomic Clock app. So far, I have a very consistent graph of time gain. I am averaging 2-3 seconds gained per day. It is interesting - if I leave my watch lying flat overnight, it will gain a second. If I leave it sitting vertically, with the 6 pointing down like a regular clock, it will be spot-on next morning. Daily wear tend to gain more time than sitting idly. I am hopeful as weather get hotter toward summer, it will slow down a bit to be closer to perfect accuracy. What variation is everyone seeing in summer compared to winter/spring? Have any of your hi-beats improved over time or gotten worse?

 

A watch's accuracy over only one week doesn't mean too much. Calculate weekly derived average daily rates over, say, as a minimum, 8 weeks. Plot these using Excel software. Now you can understand your watch's rate and, more importantly, its stability of rate -- precision, or lack of it.

Good luck,
heb

 

My Hi Beat stared at -2.5 s/day on wrist for the first few months but in the last month or so it's dropped to -5 s/day. Just going to ride it out until first service to see what happens.

 

So it started out with losing time, and now it is running even slower? I think these watches are programmed to gain time, this being -1/+10 when worn and -3/+5 when stationary. I would imagine -5 will be excessive and should be covered under new watch warranty. Mine gains time, which I think is the majority of folks with mechanical watches. Summer is going to bring hot weather, which tends to slow down the mechanical movement even more. So I am hopeful for more accuracy during hot months

 

I'm new to GS, but dang I love the spring drive. It is a lot more accurate than my Omegas (which aren't bad). I really want another GS but it has the hi-beat in it.

 

Spring Drive are very accurate but i would say Omega METAS movements are spot on. Both the 8900 and 8800 movement that i had and have are 0/sec per day over a 3 weeks tracking period.