Heritage Collection
62GS Mechanical 30mm
STGK031

A mechanical creation based on the 62GS case design that captures the beauty of early spring cherry blossoms

STGK031G

STGK031

Heritage Collection

Apr. 2025 Release

Features

This elegant 30mm wristwatch is a modern interpretation of the celebrated 62GS, Grand Seiko’s first mechanical model to feature automatic winding. It is characterized by its distinctive bezel-free construction, which allows for a seamless integration of the crystal with the case. Like its predecessor, this modern reinterpretation features the characteristic sharp edges and perfectly distortion-free surfaces that only Zaratsu polishing can create, along with a wide dial opening achieved through the bezel-free design.
The pink dial is inspired by sakura-kakushi, a phenomenon in which cherry blossoms are gently hidden beneath a blanket of snow. This tranquil scene unfolds in early spring in northern Japan, where the Grand Seiko Studio Shizukuishi, home to all Grand Seiko mechanical creations, is located.

Specifications

Exterior
Exterior: Stainless steel
Case back: See-through & Screw case back
Glass Material: Box shaped sapphire crystal
Glass Coating: Anti-reflective coating on inner surface
Case size: Diameter 30.0mm Lug-to-lug 36.2mm Thickness 10.5mm
Band width: 15mm
Clasp type: Three-fold clasp with push button release
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.
Normal usage accuracy: +10 to -5 seconds per day
Functions
Water resistance: 10 bar
Magnetic resistance: 4,800 A/m
Other details / Features:
  • 35 jewels