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A new design for a new era

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Heritage CollectionSTGK019

STGK019

Heritage Collection

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  • 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.