[Mahuta]

Question. Can anyone tell me the specs of the 6309 movement? As in the beat rate? Just wondering...

 

[Grammarofdesign]

21,600 bph. When in doubt for any Seiko movement specs, ask Ranfft:

http://www.ranfft.de/cgi-bin/bidfun-db.cgi?10&ranfft&0&2uswk&Seiko_6309A

 

[Mahuta]

21,600 bph. When in doubt for any Seiko movement specs, ask Ranfft:

http://www.ranfft.de/cgi-bin/bidfun-db.cgi?10&ranfft&0&2uswk&Seiko_6309A

Excellent. Thanks for that.

 

[7s26b]

You can also find info here http://www.christophlorenz.de/watch/index.php?l=en and here is the forum technical repair pdf section , which has a lot of information http://www.thewatchsite.com/14-user...-seiko-calibers-technical-repair-manuals.html