Grand Seiko has debuted a new iteration of its automatic Spring Drive movement with precision that rivals high-accuracy ...
Seiko’s GPS-linked Astron chronograph now comes in titanium with a crystal bezel. Every product is carefully selected by our editors. If you buy from a link, we may earn a commission. Learn more There ...
The 9R66 Spring Drive movement makes this far more than just a quartz watch ... the GMT-Master II at nearly double the price, and it isn't hard to see why Grand Seiko has such a loyal fanbase.
Grand Seiko has created a mechanical movement capable of such precision timekeeping the company has coined its own Ultra Fine ...