9S MECHANICAL MOVEMENT

SMALL SIZE AUTOMATIC

Caliber 9S27

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

Driving system

Automatic with manual winding mechanism

Mean daily rate*

+8 to -3 seconds per day

Normal usage accuracy

+10 to -5 seconds per day

Power reserve

Approximately 50 hours

Vibrations

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

Number of jewels

35 jewels

Features

-Date display

* 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.

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 incorporates the latest technology alongside its breadth of craftsmanship to raise the art of watchmaking to its peak.

CALIBER 9S27 MODELS

9S MECHANICAL MOVEMENT

Caliber 9S27 | MECHANICAL | MOVEMENT | ABOUT | Grand Seiko