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Grand Seiko Kodo Constant-force Tourbillon

Grand Seiko Kodo Constant-force Tourbillon
© Grand Seiko

Grand Seiko Kodo Constant-force Tourbillon back
© Grand Seiko

The Kodo Constant-force Tourbillon is a wristwatch from Grand Seiko.

Presented in spring 2022 at the Watches & Wonders Geneva, this limited edition model is Grand Seiko's first mechanical complication watch.

The innovative newly developed movement 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. The watch is available from in October 2022.



  • SLGT003



  • Platinum 950 and Grand Seiko’s Brilliant Hard Titanium
  • Ø 50.6 mm, H 12.9 mm
  • Domed sapphire crystal, anti-reflective coating inside
  • Transparent screwed case back
  • Waterproof to 10 atm
  • Magnetic resistance 4,800 A/m


  • Open


  • Hour, minute
  • Seconds via tourbillon



  • 20 pieces worldwide in 2 years


  • £309,360 (2022)


grand_seiko_kodo_constant-force_tourbillon.txt · Last modified: 03.07.2022 15:34 by

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