Finding Seiko 5740C and 4S28 tech sheet.

[EatPeach]

Hey guys. I'm finding technical sheets of the following seiko movement: 5740C and 4s28. If you know where I can access to these files, please let me know.

BTW I'm planing to sort of 'DIY' a wrist watch use these two movement and dial strip down from pocket watches. If you had work on any of these movement, please leave a message I‘ll contact you privately if that‘s OK.

Thank you guys.

Peace

[JohnR725]

not a lot of information out there at least not that I'm finding. I found a couple articles on each of the watches. I did find a 4S15 sheet not the same one you requested but it's in the same family hopefully it's helpful. Then I did find the  the other one working on my computer no idea where it came from? As conveniently looking online I didn't find one.

 

https://reference.grail-watch.com/family/seiko-4s/

https://www.tapatalk.com/groups/seikoholics/inside-the-seiko-caliber-5740c-high-beat-t1188.html

263_Seiko4S15A.pdf 5740C-Lord-Marvel-36000.pdf

[EatPeach]

17 hours ago, JohnR725 said:

not a lot of information out there at least not that I'm finding. I found a couple articles on each of the watches. I did find a 4S15 sheet not the same one you requested but it's in the same family hopefully it's helpful. Then I did find the  the other one working on my computer no idea where it came from? As conveniently looking online I didn't find one.

 

https://reference.grail-watch.com/family/seiko-4s/

https://www.tapatalk.com/groups/seikoholics/inside-the-seiko-caliber-5740c-high-beat-t1188.html

263_Seiko4S15A.pdf 377.38 kB · 3 downloads 5740C-Lord-Marvel-36000.pdf 604.79 kB · 3 downloads

Thank you so much! These are very helpful informations.