Grand Seiko T0 Constant-force Tourbillon
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Grand Seiko T0 Constant-force Tourbillon

Reading Time: 11 minutes Seiko Watch Corporation revealed the T0 (T-zero) Constant-force Tourbillon (abbreviated as “T0”) as a concept creation of Grand Seiko in September 2020. It represents the world’s first movement with a fully integrated constant-force and tourbillon on the same axis, aiming to create a mechanical watch with the highest accuracy possible. […]