Strangest Seikos

timjohn · Feb 20, 2023

Dsloan
I've been googling around, but can't seem to figure out what the "km" markers or settings on these giugiaros do - are they some kind of tachy scale? At first, I was wondering if it had some sort of pedometer setting, but 100.0km sounds pretty extreme for that to be the case.

I'm guessing here, but possibly it calculates average speed over a known distance -- eg 100km is four laps of the full Nurburgring -- using the start/stop buttons.

Here's my 8T23 -- the first and as far as I am aware only manually wound quartz watch. James Dowling and @tyrantlizardrex are to blame for the show and tell at time4apint that got me into it, and the superb Kay @krogerfoot for helping get it from Japan (it is also his pic). I'm now trying to find a replacement capacitor....

Dsloan · Feb 20, 2023

timjohn
I'm guessing here, but possibly it calculates average speed over a known distance -- eg 100km is four laps of the full Nurburgring -- using the start/stop buttons.

Here's my 8T23 -- the first and as far as I am aware only manually wound quartz watch. James Dowling and @tyrantlizardrex are to blame for the show and tell at time4apint that got me into it, and the superb Kay @krogerfoot for helping get it from Japan (it is also his pic). I'm now trying to find a replacement capacitor....

That's an interesting theory on the giugiaro. I'll have to keep poking around until I can figure it out.

Thanks for sharing the manual wind quartz! I was able to find a nice write-up on it: https://www.plus9time.com/blog/2017/12/28/worlds-first-hand-wound-quartz-seiko-8t23.

It's funny to me - we're so used to ultra cheap quartz movements, it's surprising to think about how complex and exciting the development of these technologies were at the time - like having to figure out how to get consistent movement from the stepper motor despite changes in voltage depending on the amount of charge in the capacitor.

Walrus · Feb 21, 2023

Dsloan
Credor does look pretty amazing. I haven't seen one in the metal before, unfortunately. If I was a multi-millionaire, I'd pick up one of their enamel-dial three-handers.

But, TBH, this is more like what I was going for with this thread:

I've been googling around, but can't seem to figure out what the "km" markers or settings on these giugiaros do - are they some kind of tachy scale? At first, I was wondering if it had some sort of pedometer setting, but 100.0km sounds pretty extreme for that to be the case.

Ya I know what you were going for the strange seiko but I’m a rebel without a clue and that Credor was being sold on Reddit for 40k or so I think

mountainunder · Feb 21, 2023

Dsloan
I've been googling around, but can't seem to figure out what the "km" markers or settings on these giugiaros do - are they some kind of tachy scale? At first, I was wondering if it had some sort of pedometer setting, but 100.0km sounds pretty extreme for that to be the case.

The reissued watches (SBJG001,SBJG003 A825-00A0,A825-00B0) released in 2018 have the same features, so why not consult the manual!
You can download the PDF here
https://www.seikowatches.com/jp-ja/-/media/Files/Common/Seiko/instructions/English/A/A825/A825.pdf

Dsloan · Feb 21, 2023

M mountainunder
The reissued watches (SBJG001,SBJG003 A825-00A0,A825-00B0) released in 2018 have the same features, so why not consult the manual!
You can download the PDF here
https://www.seikowatches.com/jp-ja/-/media/Files/Common/Seiko/instructions/English/A/A825/A825.pdf

Oh cool! Thanks! So @timjohn was correct - it's a tachy function with driving distance presets! Which, I guess makes sense with giugiaro being a car designer, among other pursuits.

Dsloan · Feb 21, 2023

Walrus
Ya I know what you were going for the strange seiko but I’m a rebel without a clue and that Credor was being sold on Reddit for 40k or so I think

Sorry, I didn't mean to gate-keep this thread. Credor movements are very pretty indeed.

Dsloan · Jul 1, 2023

Reviving an old threat for a super strange, formerly top-shelf quartz movement that I saw in the wild today.

The LED at top right blinks every second just to remind you of it's high tech engineering.

Strangest Seikos

timjohn

Dsloan

Walrus

mountainunder

Dsloan

Dsloan

Dsloan

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