SLGT003G
Limited edition of 20 pcs

Grand Seiko Kodo Constant-force Tourbillon

SLGT003

  • Available at the Grand Seiko Boutiques and Grand Seiko Salons

Features

Grand Seiko's first mechanical complication watch

Grand Seiko reaches a new milestone in the sixty-two year history of Grand Seiko with the introduction of the brand’s first mechanical complication watch, the Grand Seiko Kodo Constant-force Tourbillon. At its heart is a uniquely innovative movement that delivers a level of stable accuracy unprecedented for Grand Seiko by combining a tourbillon and a constant-force mechanism as one unit on a single axis for the very first time in horological history. The watch is named Kodo, the Japanese word for heartbeat. With its unique appearance when in motion and with its carefully designed sound, this revolutionary watch reveals its vitality both audibly and visually, thanks to the open-work design and the sapphire case back. Most remarkable of all is the way that the constant-force mechanism and the tourbillon have been integrated together to allow the creation of an overall design that is perfectly in harmony with the values of Grand Seiko and whose technical ingenuity is encased in a watch of great elegance and wearability.

Specifications

Exterior
Exterior: Platinum 950 and Brilliant Hard Titanium
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
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)
Mean daily rate: +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.
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
  • Power reserve indicator