caliber9S27

9S MECHANICAL MOVEMENT

SMALL SIZE AUTOMATIC

Caliber 9S27

The new Grand Seiko automatic caliber 9S27 strikes that difficult and delicate balance between high performance and slimness. The latest Spron 610 alloy is used for the balance spring, the pallet fork and escapement wheel are made by MEMS engineering.

SPECIFICATIONS

Winding mechanism

Automatic with manual winding mechanism

Accuracy
(when static)

+8 to -3 seconds per day

Note: *Mean daily rate is a mean value of daily rates in a condition where the movement before assembly in a case is measured in six positions in a fixed manner under artificially controlled environment for 12 days.

Normal usage accuracy

+10 to -5 seconds per day

Power reserve

Approximately 50 hours

Vibrations

28,800 vibrations per hour (8 beats per second)

Jewels

35 jewels

Features

· Date display

What makes 9S Mechanical special?

The concept of Grand Seiko was born from the desire to build the world's best watch, and the collection continues to push precision in mechanical watches to the limits of timekeeping technology.
As a true manufacture, Grand Seiko combines the latest technology with hand craftsmanship to raise the art of mechanical watchmaking to the highest possible level.