Last year, in typically understated Japanese fashion, Seiko quietly introduced its 6R55 and 6R5J calibres – the latest generation in the ongoing family of 6R movements first introduced in 2006. We’ll ...
The 9R66 Spring Drive movement makes this ... it to Rolex models like the GMT-Master II at nearly double the price, and it isn't hard to see why Grand Seiko has such a loyal fanbase.