H.M.Timepiece - Grand Seiko introduces a new generation Spring Drive calibre that is slimmer, even more precise and has a greater power reserve. Calibre 9RA5 takes Spring Drive technology to a new
The New Grand Seiko Calibre 9RA5 Spring Drive 5 Days | Grand Seiko introduces a new generation Spring Drive calibre that is slimmer, even more precise and has a greater power reserve.
![Slimmer, more precise and more powerful. A new Spring Drive movement marks a new beginning for Grand Seiko. | Grand Seiko Slimmer, more precise and more powerful. A new Spring Drive movement marks a new beginning for Grand Seiko. | Grand Seiko](https://www.grand-seiko.com/nl-en/-/media/Images/GlobalEn/GrandSeiko/Home/news/20200305-10/2020030510img07png.png)
Slimmer, more precise and more powerful. A new Spring Drive movement marks a new beginning for Grand Seiko. | Grand Seiko
![Introducing: The Grand Seiko 60th Anniversary Limited Edition Professional Diver's 600M SLGA001, With New Spring Drive Caliber 9RA5 - Hodinkee Introducing: The Grand Seiko 60th Anniversary Limited Edition Professional Diver's 600M SLGA001, With New Spring Drive Caliber 9RA5 - Hodinkee](https://hodinkee-production.s3.amazonaws.com/uploads/images/1583271278691-n2r9ibxtahn-23856f746d834783c908414a77c6407f/9RA5_b.jpg)