Masterpiece Collection

A unique series from a unique watchmaking studio

Evolution 9 Collection

A new design for a new era

Heritage Collection

Breathing new life into tradition

Sport Collection

Designed for those who love sport and aim high

Elegance Collection

Contemporary elegance for exceptional occasions
Collections
World of Grand Seiko
News
Support
Stores
Country/Area

Heritage CollectionSTGK019

STGK019G

STGK019

Heritage Collection

Online Boutique

Search Stores

  • Available at the Grand Seiko Boutiques

Features

Specifications

Exterior
Exterior: Stainless steel
Glass Material: Dual-curved sapphire crystal
Glass Coating: Anti-reflective coating on inner surface
Case size: Diameter 27.8mm Lug-to-lug 33.5mm Thickness 11.2mm
Band width: 13mm
The perimeter of Band: 190mm
Movement
Caliber no.: 9S27 Instructions
Movement Type: Automatic with manual winding
Power reserve: Approx. 50 hours
Mean daily rate: +8 to -3 seconds per day
  • 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.
Functions
Water resistance: 10 bar
Magnetic resistance: 4,800 A/m
Other details / Features:
  • 35 jewels
Watch finder

The three movements at the heart of Grand Seiko

9SMechanical

One of the world's foremost mechanical movements, the culmination of high-precision micro-engineering and the attention to detail of Grand Seiko's expert watchmakers.

9RSpring Drive

Spring Drive’s unique movement technology generates power through a mainspring like other mechanical watches but combines this with the Tri-synchro Regulator for extraordinary precision.

9F Quartz

The ultimate quartz movement. Caliber 9F incorporates several unique technologies that raise the performance of quartz to the high standards of Grand Seiko.