Cal. 9S25 is the first in a series of luxury automatic movements for women. Introduced by Seiko in 2018, Cal. 9S25 incorporates many of the advances found in the Cal. 9S6x family of movements, including MEMS engineering on the pallet fork and the new Spron 610 balance spring alloy.
Seiko 9S25
Grand Seiko Cal. 9S25A