Seiko Caliber 7S26

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Manufacturer Seiko
Caliber Number 7S26
Movement Type Automatic
Jewels 21
Vibrations Per Hour
21,600 bph
Shock System Seiko Diashock
Power Reserve
41+ hours
Magnetic Resistance 4,800 A/m (60 gauss)
Winding Direction
Not hand-windable
Hacking? No
Diameter 12”’ / 27mm
Height 4.8mm
Functions Hours, minutes, central seconds, day/date calendar
Country of Manufacture Japan/Malaysia
Known Brands
Seiko Scuba Diver’s (add more 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. Seiko dive watches, such as the Orange Monster, have since been upgraded to the caliber NH35, 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.

Operational temperature range: Between -10 ºC and 60 ºC (Between 14 ºF and 140 ºF)

Other movements in this series:

This post desperately needs higher quality pics. If you have anything you can contribute, please let us know.

Example of a Seiko caliber 7S26C:

Seiko caliber 7S26C made in Malaysia

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[…] calibers: while both are Japan automatic movements, the Seiko is using a 7S26 while the Spinnaker has an […]

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[…] SKX175 employs Seiko’s widely-used 7S26 automatic movement. While it might not be the most accurate design available, it has a reputation as a solid workhorse […]

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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
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Carlos Velazquez

I need parts or the movement for Seiko 7S26
Thanks

Carlos Velazquez
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Carlos Velazquez

Thank you for the information
Carlos

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[…] 7S26 […]

Marco
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Marco

Seiko Military/Pilot Style Watches SNK80x series

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[…] Seiko caliber 7S26: calibercorner.com… […]

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

Fred
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Fred

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.

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[…] You might also want to consider the NH35. Further reading:Seiko Caliber 7S26 Watch Movement | CaliberCorner.com And it is also said, "go not to the Elves for counsel, for they will say no and yes." — […]

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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
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Alan

Do you still need pictures of this calibre?

Ntseh Lovet
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Ntseh Lovet

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
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Jorge Lara Gonzalez

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

nizam
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nizam

How much Dh ?

Carrie
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Carrie

What is Dh?

Septian Blog
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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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[…] of those areas. Sure, it’s reliable and works well, but it just does what it needs to. It is the 7S26 movement with a day and date display, which if you think about it is also something that typically adds more […]

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