Seiko Caliber 7s26a Movement

Seiko Caliber 7S26

Seiko Caliber 7s26a Movement

Manufacturer Seiko Time Corp.
Caliber Number 7S26
Replaced By
4R36
Movement Type Automatic, self-winding mechanical
In-House?
Yes
Diameter
27.4mm
Casing Diameter
27mm
Height
4.8mm thick
Jewels 21
Power Reserve
~41 hours
Beat Rate
21,600 vph, 3 Hz
Lift Angle
53 degrees
Shock System Seiko Diashock
Regulator
Etachron style
Magnetic Resistance 4,800 A/m (60 gauss)
Winding Direction
Bi-directional (Magic Lever)
Hand-Windable? No
Hand Count
3
Hand Sizes
1.5mm / .89mm / .21mm (1.5mm / 0.9mm / 0.2mm)
Functions Central hours; central minutes; central sweeping seconds; day/date calendar at 3:00
Hacking Seconds? No
Country of Manufacture Japan/Malaysia/Singapore
Known Brands
Seiko Scuba Diver’s (SKX series: SKX007, SKX009 for example), Seiko 5 SNK, too many to list (Add your watch in the comments below…)

The Seiko caliber 7S26 is an automatic movement used in many popular Seiko divers and the entry level Seiko 5 watches.

This movement was first released to the market in 1996. The most recent tech sheets found were dated 2011.

Note: The caliber number of this movement is sometimes incorrectly written as 7526A – it should be the letter S not the number 5.

Discontinued:

The caliber 7S26 is no longer in production and has been replaced by Seiko caliber 4R36 (or non-Seiko branded NH36A). Therefore, modern Seiko watches, such as the Seiko 5 Sports family and Next Gen Orange Monster, have since been upgraded to the 4R36, making Seiko collectors happy because the 7S26 seen here does not hack and is not hand-windable – two functions that have become more and more popular and are the main differences between the 7S26 VS 4R36 movements.

7S26A VS 7S26B VS 7S26C:

The letter indicates the evolution of the caliber 7S26. 7S26 and 7S26A is the first generation of this caliber and are the same. 7S26B is the second generation. 7S26C is the third and final version.

The difference between A/B in Seiko’s own words:

“Cal. 7S watches are changed from caliber “A” to caliber “B” in October 2006 production. According to the change, we would like you to pay attention to the design of the balance staff when repairing those watches.” -Source: Seiko Parts Catalogue/Technical Guide Cal. 7S26B, 7S36B. Published 2007.

The difference between B/C in Seiko’s own words:

“SEIKO Automatic Mechanical Cal. 7S26C / 7S36C are replacement caliber of Cal. 7S26B / 7S36B. Construction of the C series is same as B series, but using new parts. Since the size of movement is same as B series, the complete movement can be assembled into the watches which originally have the B series move-ment; however, as the parts are not convertible, please use the appropriate parts for each caliber.” -Source: Seiko Parts List/Technical Guide Cal. 7S26C, 7S36C. Published 20011.

7S26 VS 7S36:

The main difference between the 7S26 and the 7S36 is that the caliber 7S36 has 2 extra jewels. The 7S26 has 21 jewels and the 7S36 has 23 jewels. Many enthusiasts refer to this as 2 non working jewels. There is speculation that the 7S36 was supposed to eventually replace the 7S26, but that never actually happened.

WUS user Biased&Critical explains the comparison in detail:

The extra 2 jewels are on the “lower bridge for 3rd wheel and pinion”. They are lower cap jewels for the 3rd and escape wheels. But that’s a bit of a fancy answer – here’s an easy one: they are basically useless jewels and do nothing to alter performance… To answer your question, as far as complete swapouts go, they are interchangeable. But that would be a practice in futility – you wouldn’t gain or lose anything but (your own) time. I have both of these movements, have for years, and there is no practical difference. But to repair, there are some things to consider. Some of the parts are different in size – you can find the details around here somewhere, but the 3rd and escape wheels have different axle lengths due to the jeweled capping. Not to mention this bridge that simply does not exist in the 7s26. Maybe something else equally minor.

7S26C/7236C Part Differences:

  • Screw for lower bridge for 3rd wheel and pinion
  • Lower bridge for 3rd wheel and pinion
  • Oscillating weight

Setting Time Backwards / Counterclockwise:

A Caliber Corner community member started a discussion in the comments below about the ability to adjust the time in reverse rather than by advancing the hands forward. As with many topic on watches and movements, answers on different sites vary and opinions are all over the place. We contacted Seiko directly to get an official answer straight from the source.

“Dear Seiko,

The instruction manual on page 13, step 5 says: “Keep advancing the hands to set the correct time.” Can you please clarify if this means that the hands should not be turned counterclockwise when setting the time? For example, if traveling to a different time zone or daylight savings time, is it ok to move the hands backwards several hours to set the current time?”

“Dear Seiko Customer,

When traveling between different time zones, you can adjust the time backwards. We recommend you do NOT adjust the time when the watch is in the middle of changing the date.”

Therefore, it is confirmed that you can set your time forwards or backwards as long the date changing mechanism is not activated to switch over the calendar.

Seiko 7S26A Macro Gallery:

Seiko Caliber 7s26a Etachron Regulator Seiko Caliber 7s26a Macro Gears

Example of a Seiko caliber 7S26C:

Seiko caliber 7S26C made in Malaysia

Seiko Caliber 7s26c Calvinwcyy

Seiko Caliber 7s26c Calvinwcyy 1

Video: Seiko 7S26 Full Service Disassembly and Assembly

7S26C Tech Sheets (pdf):

Additional Resources:

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Join the discussion on Seiko Caliber 7S26?

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[…] you might be able to read the tiny text at the bottom of the dial stating that the SNKK71 uses Seiko’s 7S26 automatic movement. With 21 jewels to damped vibration, this movement is renowned for its reliability and accuracy at […]

Carlos Velazquez
Carlos Velazquez
6 years ago

I need parts or the movement for Seiko 7S26
Thanks

Sera
Sera
2 years ago

I haved

Carlos Velazquez
Carlos Velazquez
6 years ago

Thank you for the information
Carlos

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Marco
Marco
6 years ago

Seiko Military/Pilot Style Watches SNK80x series

Richard Hufnagel
Richard Hufnagel
5 years ago
Reply to  calibercorner

Just picked up a Seiko recraft big 44mm cusion case style. Big and beautiful. Drives me nuts I can’t hand wind it though.

Richard
Richard
10 months ago

My first encounter with this movement. I just unboxed my Seiko Recraft this morning. Beautiful retro watch, but I agree, hand winding would be nice. Not a deal-breaker for a watch I’ll wear only occasionally, but I would have preferred it came with the 4R36. But, by all accounts I’ve seen, the 7S26 is a proven, rugged and reliable movement. The second hand will back hack, so I’m still able to set time to the second after a few shakes side to side to get it moving.

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[…] First things first. This is an automatic watch. Technically, it is Seiko’s 7S26 automatic movement. […]

Fred
Fred
6 years ago

Very good caliber, reliable and good accuracy and the shock system is very good. Mine felt from 1.5m on hard floor and no problems, really good and cheap workhorse caliber 7S26.

David Vaughan
David Vaughan
2 years ago
Reply to  Fred

Would love to know what type of accuracy you’re getting?

GetServed
GetServed
1 year ago
Reply to  David Vaughan

I heard that it is +45/-35 seconds per day.

John Raba
John Raba
6 months ago
Reply to  Fred

Sorry, this movement does not provide good accuracy. It was designed to be inexpensive and cheap to manufacture. It’s performance demonstrates this reality.

Zak dimitrov
Zak dimitrov
2 months ago
Reply to  John Raba

That’s not my experience, I too dropped my 7s26 8750 from 1½ meters, cracked class, but still works great. I bought it of an Indian watch repair & resale site 1 year ago. My watch has lost 25 seconds in that time. Paid $58 aus. It’s a 20 year old watch
Happy as larry

Zak dimitrov
Zak dimitrov
1 month ago
Reply to  Zak dimitrov

Ps, power reserve 46 hours,
I let it run dry twice.
1st time 44 hours
2nd time, 46 hours

17041736134591143280755288292292
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[…] your frequent usage of the watch as it comes with a 40 hour battery reserve. The good side is that 7s26 is a decent automatic movement, beating at 21600 BHP and featuring 21 […]

Alan
Alan
5 years ago

Do you still need pictures of this calibre?

Ntseh Lovet
Ntseh Lovet
5 years ago

I have owned a Seiko 7S26A since 2007. It has sustained fall shocks and minor scratches but yet still works, albeit with constant time adjustments. I think it needs to be refurbished.

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[…] exactly what Seiko is all about. This superb Seiko 5 timepiece comes with 21 jewels and uses a 7S26 caliber self-winding mechanical movement that cannot be manually […]

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[…] I have harped on about a number of times, one of the most notable features of this range is the 7S26 Automatic movement with 40 hrs power reserve. It is quite a basic movement for Seiko, but let’s face it – […]

Jorge Lara Gonzalez
Jorge Lara Gonzalez
5 years ago

Tengo un seiko automatico 7s26c, necesito saber si es sumergible y a cuantos metros.

Dario Rodas
Dario Rodas
4 years ago

Jorge,

La característica de hermeticidad depende del reloj (conjunto, de caja, cristal, empaques y calibre) más que del movimiento en sí.
El 7S26 es usado en relojes como el SKX007 o SKX009 que tienen una hermeticidad garantizada de hasta 200m y cumplen con un conjunto muy exigente de requisitos (Standar ISO6425) de tal forma que puedes bucear con ellos.

Si el reloj que tienes es uno de los que menciono, la respuesta es 200m.

MARK WOLFSON
MARK WOLFSON
4 years ago
Reply to  Dario Rodas

MA CHE COSA STAI FACENDO?

J. Henley
J. Henley
24 days ago

@Jorge Lara Gonzalez, es sumergible a 30 metros. Encantada, mi amigo relojes. 😉

nizam
nizam
5 years ago

How much Dh ?

Carrie
Carrie
5 years ago
Reply to  nizam

What is Dh?

Igor
Igor
1 year ago
Reply to  Carrie

Arab money

Septian Blog
Septian Blog
5 years ago

This caliber overall is so good, i have nice experience with seiko 5 SNK805.

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[…] Calibrul 7S26 : e un mecanism lansat in 1996 si pe care Seiko l-a folosit de-a lungul timpului pe mai multe modele, este automatic cu 21 de rubine, autonomie 40 ore (minim), nu se poate intoarce manual, este recunoscut pentru fiabilitatea sa. […]

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Calvin
Calvin
4 years ago

Hi, i have very high quality photos of the movement for my Seiko 5. Would you like to have it?

Calvin
Calvin
4 years ago
Reply to  calibercorner

Cool, I have emailed and submitted 🙂

Chuck b134
Chuck b134
4 years ago
Reply to  calibercorner

I might be purchasing one what’s a fair value

Jack
Jack
2 years ago
Reply to  Chuck b134

About 100 US dollars.

Manuel
Manuel
1 year ago
Reply to  Jack

Only the caliber or wacht?

Paulo Balsan
Paulo Balsan
4 years ago

Where can I find this caliber’s accuracy in seconds?

GetServed
GetServed
1 year ago
Reply to  Paulo Balsan

I heard that it is +45/-35 seconds per day.

pap
pap
4 months ago
Reply to  GetServed

A good watchmaker will solve that problem

pap
pap
4 months ago
Reply to  GetServed

45 s a day its a chinese watch

pap
pap
4 months ago
Reply to  Paulo Balsan

THIS CALIBER IS DISCONTINUED NOT PRODUCED ANYMORE YOU FIND THEM NEW THEY CAN BE A SCAM.. or with lucky an old stock from a shop but you must be carefull some seikos are not from japan.

potato
potato
2 months ago
Reply to  pap

Any idea what year 7s26c was discontinued? i have a watch whose first two serial numbers read 2N, that means the watch is either from 2012 November or 2022November.

Watch-Man
Watch-Man
2 months ago
Reply to  potato

Seiko stopped fabricating them ca. 2018-19. However, since Seiko probably made millions of these, Seiko cased them until inventory dried up. I have a 7/2020 SNK809. However, not sure until 2022 Seiko was still casing them. So, I’d say yours is from 2012.

potato
potato
2 months ago
Reply to  Watch-Man

Thanks a lot man. I think so too. It’s highly unlikely that they’d case these watches until November 2022, that makes sense. so my watch is 11 years old now

J. Henley
J. Henley
24 days ago
Reply to  potato

11 years an counting. Often up to 40+years, so your watch has some 25-29 years left to go. No worries, my watchfriend. 😀

Zak dimitrov
Zak dimitrov
1 month ago
Reply to  potato

7s26c = 2006 – 2016
Yours would be November 2012

Buck
Buck
4 years ago

Also known as cal V676. 🙂

Carrie
Carrie
4 years ago
Reply to  Buck

In what watch? Never heard of V676 before. Are you sure this is correct?

Buck
Buck
4 years ago
Reply to  Carrie

Yes, I’m sure, it’s fitted to various Seiko sub-brands such as Alba.

Buck
Buck
4 years ago
Reply to  Buck

Apologies for the typo Y676!!

Wael
Wael
1 year ago
Reply to  Carrie

Alpa watch

Johann von Goethe
Johann von Goethe
1 year ago
Reply to  Carrie

He means the Y676 caliber (=7S26)

Daniel
Daniel
1 year ago
Reply to  calibercorner

I have a watch with Y676c but the rotor looks nothing like 7s26

daniel
daniel
1 year ago
Reply to  calibercorner

the rotor look like 36 version tbh, ill change it to 4r36’s movement anyway

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[…] turn this metallic watch over to view its constantly cranking automatic watch movement. The Seiko Caliber 7S26, which is written in fine print on the face of the watch, is a refined yet simple watch movement […]

Dave
Dave
4 years ago

Excellent movement for the basic Seiko 5 (excellent watches by the way, inexpensive but not ‘cheap’). However, the Orange Monster does need the NH35 movement, the 7S26 being too modest. Heck, I’ve got an Invicta Pro Diver (a great watch by the way, don’t be misled by watch snobs) with the NH35 movement!

pap
pap
4 months ago
Reply to  Dave

They dont produce seiko 5 anympore.

J. Henley
J. Henley
24 days ago
Reply to  Dave

I can’t stretch enough how I underline your ‘Invicta Pro Diver-part’ of your posting, @Dave. 😀 My Invicta watches (3 x) with the ETA-2824, Miyota 8215 and NH35 movements respectively, are all equally endeared to me. 😀

Tim
Tim
4 years ago

What a beautiful Seiko! Do you know if they’re selling it in the US? I haven’t seen it around?

Toussaint
Toussaint
4 years ago
Reply to  Tim

Yes, you can find it on Amazon for $90.

pap
pap
4 months ago
Reply to  Toussaint

How? japan dont produce seiko 5 anymore.

Toussaint
Toussaint
4 months ago
Reply to  pap

I posted this four years ago when it was available on Amazon. You now have to go to Ebay and there are tons of them.

Jack
Jack
2 years ago
Reply to  Tim

World of watches

David
David
4 years ago

Is it okay to adjust 7s26C backwards? like 6 hours counterclockwise? Due to traveling one timezone to another? Because i have seen lots of posts regarding adjusting backwards can cause damage to the movement. Thanks for the feedbacks! 🙂

G. Torres
G. Torres
4 years ago
Reply to  David

I never heard of such a thing. I always adjust the time on my watches clockwise or counterclockwise. The date it another thing though, I wouldn’t adjust that counterclockwise, and I don’t even think it’s possible. I also wouldn’t adjust the time one full day backwards for the same reason as the date. But 6 hours shouldn’t be an issue. If anyone else here says otherwise then I will be learning something new along with you.

Wambly
Wambly
4 years ago
Reply to  David

You should not adjust the date of your watch while the hands are between the hours of 8:00 PM and 2:00 AM.

It is fine to adjust the time of your watch forwards or backwards.

On some watches without a quickset date, the way to adjust the date without going all the way around the dial twice, is to move the hands past 12:00 am and back to 8:00 PM then to 12:00 AM again will jump the date ahead.

David
David
4 years ago
Reply to  calibercorner

Thank you very much! I will wait for that “golden” answer regarding 7S26 if its okay to turn backwards 🙂

David
David
4 years ago
Reply to  calibercorner

Hello! Thank you very much for the response! Highly appreciated! I hope this also helps the people who has the same curiosity and also the ones who are too paranoid that they may break something 🙂

Timur
Timur
4 years ago
Reply to  calibercorner

Tell me please, what does the marking WP, KY, R on the back cover of a Seiko watch mean?

igor
igor
3 years ago
Reply to  Timur

Tell me please, what does the marking WP, KY, R on the back cover of a Seiko watch mean?

igor
igor
3 years ago
Reply to  calibercorner

Tell me please, what does the marking WP, KY, R on the back cover of a Seiko watch mean?

J. Henley
J. Henley
24 days ago
Reply to  calibercorner

There reallt ís a “definite” and “safe” answer to this question – that’ll serve for all automatic calibres – and it’s this anwer: *there will be no damages done to any kind of automatic watch calibre, when one procedes in the following manner …* When setting the watch’s day/date/time one has to keep in mind, that a safe set of variables for setting the watch is “between 20:00 hours (= 8:00 p.m.) and 03:00 hours (= 3:00 a.m.)”. N.B.: without the quick set date, one may go back and forth between said time variables, no less. Going beyond these said… Read more »

Jack
Jack
2 years ago
Reply to  David

Yes Seiko responded yes

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[…] But frequency numbers and caliber precision dropped. So, 6R15 is actually an improved version of 7S26. Seiko did a great job with it, but what enthusiasts would like to see inside is actually something […]

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Nikola Jankovic
Nikola Jankovic
4 years ago

Seiko ReCraft Automatic have this movement.

roger kalter
roger kalter
4 years ago

i have a seiko snkp27 recraft, and although a stunning watch, the accuracy needs regulating. besides that, there is no lume. so i have ordered replacement hands for the 7s26 movement on ebay. hope i can get this done by my watchmaker, as well as regulating.
any thoughts?

Gio
Gio
4 years ago

How will I know if my 7s26 is good for shower or not? It says only water resistant but no specific bars. Thank you!

Krisotpher
Krisotpher
4 years ago
Reply to  Gio

7S26 is the movement. It’s hard to say without knowing which watch it is. Sounds like it’s not a divers watch if they don’t tell you how much water resistant is it.

Fred
Fred
4 years ago
Reply to  Gio

For shower, it should be at least 50m water resistent, most 7s26 are 100m WR, some are 50m. You can see on the back of the watch 100m W.R., or you can see it on the dial also.

Jack
Jack
2 years ago
Reply to  Gio

Seiko says it’s OK to shower with it on.

Scdevon
Scdevon
2 years ago
Reply to  Jack

Seiko says a lot of things. I can’t see how soap suds residue stuck under pushers (if equipped) and crowns and rapid temperature changes are a good thing. Soap can’t be a good thing long-term for rubber seals, either.

J. Henley
J. Henley
24 days ago
Reply to  Jack

No Jack, that’s simply not true, matey. 😉

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ck.chan
ck.chan
3 years ago

please advise where can I have a tech sheet of the movement 7S26A for making watch hands

ck.chan
ck.chan
3 years ago
Reply to  calibercorner

yes, I saw it but there is no data related to watch hands producing

J. Henley
J. Henley
24 days ago
Reply to  ck.chan

Why make those hands, if you can obtain them by simply buying them ?

Trevelyan Bloomfield
Trevelyan Bloomfield
3 years ago

I’m considering purchasing a Seiko 5 SNZG15 with this movement, however, the lack of hacking and handwinding leaves me cold. Is there another movement with hacking and handwinding that could be substituted in its place?

agung
agung
2 years ago

I like no handwinding watch better than a watch with handwind. It is more “automatic” to me.

anonymous
anonymous
2 years ago

You can actually “hack” a 7s26 even if it is “non-hacking”. With crown out to time set mode, applying a very gentle back pressure will stop the second hand. I can routinely set my 7s26C to atomic clock reference time since years, with no ill effects.

David Vaughan
David Vaughan
2 years ago
Reply to  anonymous

Yep, It’s a great hack for the non-hacking movement. I just set my skx that way, alas it’s running way slow. I’ve taken to setting it 30 sec ahead so as not to let the slowing of the movement bug me too much.

jonathan kasch
jonathan kasch
1 year ago
Reply to  David Vaughan

it’s just dirty and the oil is drying out. the K had real quality control issues . it’s worth gettin an NH36 and swapping out the movement. it’s a good way to make your beloved SKX live again. or just buy a 5 cheap and swap them

Robert
Robert
5 months ago

I know I’m 3 years late to this party, but I don’t see a response to your question so I’ll lend my advice. I would go with the NH35a. It’s robust, reliable and is basically what replaced the 7s26 anyway.

Tom
Tom
3 years ago

Hi! My seiko 5 stops (dropped by my kids couple of times) I need to get a new movement. I have the 7S26. Automatic with day&date not rewindable. Can I get a watchmaker to change it for another movement?

965016EA-24CD-4B05-9C83-BBCDA0BAB951.jpeg
jonathan kasch
jonathan kasch
1 year ago
Reply to  Tom

yes NH36 or 7s26/36 will work. NH36 needs to be crown at 4 and the date wheel and stem and crown need to be replaced. it’s a DIY for some people , watch the you tube videos first [ WARNING once you start going inside watches it can become an addiction, particularly for the SKX and 5 series. so many modifications with aftermarket parts. you can build what you want and when you actually take a 7s apart ,clean and relube it and it runs….. well i did a dance the first time]

Deen kazamma
Deen kazamma
3 years ago

I love so much Seiko, spacialy seiko5,I use it at first time in 1984,vary good wath.i use it til 1996,then I loose it in motor bike acsident…maybe somebody stil it…after that I use other brand like rupina,orient,citizen but I like Seiko..don’t know why,Couse if I use other brand my hand feel itchy but with Seiko not itchy I don’t know what…good job Seiko make such lovely watch..until now I use Seiko new one model 7s26..

Çois
Çois
3 years ago
Reply to  Deen kazamma

Yes Seiko 5 and the ‘Seiko fifty fathoms’.
The Orient Tri-Star is also a watch for you, if you like the Seiko 5.

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[…] yang tergolong pas untuk tangan orang Indonesia umumnya, Seiko SNK80 ini menggunakan mesin otomatis Cal.7S26B 21 J, yang sudah banyak di gunakan untuk entry level jam tangan otomatis, tidak lupa juga Seiko selalu […]

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[…] SKX007 está equipado por el ya descatalogado movimiento de manufactura SEIKO 7S26, de 21.600 alternancias, con 21 rubíes y 42 h de reserva de marcha. Es un movimiento muy […]

Sajjad
Sajjad
3 years ago

Hi admin,
can you explain what is the power reserve in seiko watches. It means the movement time without wearing the watch right?

anonymous
anonymous
2 years ago
Reply to  Sajjad

Yes, power reserve is the amount of time it will tick till it stops completely.
So you (a) wind it fully (which is not easy, you can never be sure when it is fully wound, there is no power reserve indicator), and then (b) leave it on a desk/drawer and do not move it.

Zak dimitrov
Zak dimitrov
1 month ago
Reply to  anonymous

I just done 2 experiments to see when my seiko 5 1997, 7s26 8760 would run.out of power reserves
1st time 44 hours
2nd time 46 hours.
Not bad for aus $58 watch, i bought off ebay, and its 26 years old.

Johann von Goethe
Johann von Goethe
1 year ago
Reply to  Sajjad

The latter question has ‘yes’ as an answer; the former question has ‘+/- 30 hours’ as an answer.

trackback
Mejor Reloj Seiko de Buceo - Comprar Reloj
3 years ago

[…] leer la hora en el reloj sin problemas. El reloj es alimentado por el calibre automático 21 joyas movimiento Seiko 7S26 que se carga mediante el movimiento del brazo del […]

Ian Hughes
Ian Hughes
3 years ago

I have a 7s26b Deimos 5 and since I had the glass changed it gains 10 min a day how do you fix this

Çois
Çois
3 years ago
Reply to  Ian Hughes

Try to demagnitics otherwise with the adjustpin if you open the case back.

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Seiko 5 SNKE87: After One Year of Wear – The Dapper Runner
3 years ago

[…] watch has an entry-level caliber 7S26, an in-house self-winding mechanical movement that cannot be manually wound or hacked. This type of […]

Çois
Çois
3 years ago

My left arm is not so mobil. So a lot of watches (also with eta movements) I have to wind upvafter some days

Not so with my seiko’s and … miyota 9015

Çois
Çois
3 years ago
Reply to  calibercorner

Thanks

Keith
Keith
3 years ago

I disagree somewhat on the efficacy of cap jewels in the train. They would serve to 1. Reduce friction and 2. Increase life of lubricant. Practically speaking though the difference may be negligible.

John H
John H
3 years ago

I have a 2012 Pulsar automatic with a Y675 movement. It looks very similar to a 7S26. Does anyone know anything about this movement? It’s a great timekeeper and is rarely more than about 5 secs out either way.

David P
David P
1 year ago
Reply to  John H

Same movement with another branding for Lorus, Alba and Pulsar.

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