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NEW Limited edition of 20 pcs

Grand Seiko Kodo Constant-force Tourbillon

SLGT005

Masterpiece Collection

Dec. 2024 Release

Boutique Online

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  • Available at the Grand Seiko Boutiques

Features

Specifications

Exterior
Exterior: Brilliant Hard Titanium and Platinum, Caseback: Platinum and sapphire crystal
Case back: See-through case back
Case back with 6 screws
Glass Material: Box shaped sapphire crystal
Glass Coating: Anti-reflective coating on inner surface
Case size: Diameter 43.8mm Lug-to-lug 50.6mm Thickness 12.9mm
Band width: 22mm
Band Material: Calfskin
Clasp type: Three-fold clasp with push button release
Movement
Caliber no.: 9ST1 Instructions
Movement Type: Manual winding
Power reserve: Approx. 72 hours(3 days)(Constant-force: 50 Hours)
± seconds per month: +5 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: +5 to -1 seconds per day
Functions
Water resistance: 10 bar
Magnetic resistance: 4,800 A/m
Other details / Features:
  • LIMITED EDITION on the case back
  • Serial number engraved on the case back
  • Platinum buckle (PT950)
  • 28,800 vibrations per hour (8 beats per second)
  • Power reserve indicator

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 Seiko's expert watchmakers.

9RSpring Drive

Spring Drive is a unique movement that delivers one-second-a-day precision, using just the power of a mainspring.

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.