Seiko Caliber 9s66

Grand Seiko Caliber 9S66

Seiko Caliber 9s66

BrandSeiko
Caliber Number9S66
Movement TypeAutomatic
Jewels35
Power Reserve72 hours
Vibrations Per Hour28,800
HairspringSpron 610
Shock SystemDiashock
FeaturesGMT
Country of ManufactureJapan
Known ModelsSBGM031

The Seiko caliber 9S66 is an in-house movement found in a Grand Seiko GMT Limited Edition. This caliber is essentially an upgrade from GS cal. 9S56 which offered a lower 48 hr power reserve. The 9S66 found in the limited edition GMT has a blue titanium/tungsten rotor featuring a Grand Seiko lion crest.

Grand Seiko 9S66

Additional Resources:

 


You are reading Caliber Corner, the most popular resource for watch movement pics, specs, mods and DIY repairs. Follow @calibercorner on Twitter, Instagram and Facebook. Subscribe to the YouTube channel. Join our mission to spread movement awareness. Sign up!
What do you think about Grand Seiko Caliber 9S66? Keep comments respectful and follow our community guidelines.
Subscribe
Notify of
guest
2 Comments
oldest
newest most voted
Inline Feedbacks
View all comments
Paul Hamilton
Paul Hamilton
2 years ago

This is my grail movement. It’s in a great watch, the power reserve is big, and that blue rotor is so nice.

trackback
Grand Seiko SBGM235 Review - FIFTH WRIST
6 months ago

[…] Calibre 9S 20th year anniversary and limited to 1000 pieces worldwide. I am one of the lucky 1000. The movement is the tried and tested 9S66 and can be found in other GS models. Sure, you could pick up a similar model (for a lot less money […]

Venus Caliber 178
2
0
Would love your thoughts, please comment.x
()
x