9S機械機芯25週年紀念

Chapter 25

The Grand Seiko Studio Shizukuishi. Looking to the future.

Chapter 24

Caliber 9SA5, a landscape in miniature

Chapter 23

Caliber 9S64 makes winding your watch a joy.

Chapter 22

The fusion of the classical with the modern

Chapter 21

Sharing the past and building the future.

Chapter 20

The GMT watch. Making time travel easy.

Chapter 19

Striking the delicate balance between size, performance and power.

Chapter 18

The details make the difference.

Chapter 17

Precision in every aspect of time

Chapter 16

The Grand Seiko Standard. Always high and ever evolving.

Chapter 15

The Caliber 9S Twin-Barrel System. A first for Grand Seiko.

Chapter 14

The Grand Seiko Free-sprung Balance. The key to high precision.

Chapter 13

The Dual Impulse Escapement. A true innovation.

Chapter 12

Heat treatment of critical components. How to ensure lasting quality.

Chapter 11

Grand Seiko and the “Nature of Time”

Chapter 10

Zaratsu polishing, the key to Grand Seiko’s “sparkle of quality”

Chapter 9

The 44GS, from 1967 to today

Chapter 8

“Ever-Brilliant Steel” for enhanced durability and a unique look

Chapter 7

The Grand Seiko TENTAGRAPH. The high-beat, high-performance chronograph.

Chapter 6

The never-ending quest to achieve a longer power reserve

Chapter 5

Why a micrometer matters

Chapter 4

The mainspring, the power behind the precision

Chapter 3

Making and adjusting the perfect hairspring

Chapter 2

The 9S Hi-Beat 36000 series. Meeting one of watchmaking’s greatest challenges.

Chapter 1

The Grand Seiko Kodo Constant-force Tourbillon takes the 9S series to new heights.

Introduction

The 9S series. The beating heart of Grand Seiko for 25 years.