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You are here: Home / Movements / Seiko 6830

Seiko 6830

Last Update: February 18, 2020

Brand:Credor, Seiko, Shizukuishi Watch Studio
Family:
Seiko 68 Family
Height:3.98 mm
Jewels:22
Reserve:37 hours
Frequency:21,600 A/h
Winding:Hand winding
Diameter:25.60 mm (11.5 ligne)
© Seiko  Complications:Tourbillon
Hands:Central Hour Hand, Central Minute Hand, Open Heart at 9:00
Distinguishing Technical Characteristics
Ultra-Thin Hand-Winding Tourbillon
Hand-Winding
Tourbillon
Balance Bridge
Barrel at 10:30
Tourbillon at 3:00
Production: 2016 – Current
1910s 1920s 1930s 1940s 1950s 1960s 1970s 1980s 1990s 2000s 2010s 2020s

Cal. 6830 is an ultra-thin tourbillon movement from Seiko’s Credor brand. Hand-built at the Shizukuishi Watch Studio, it is part of the Seiko 68 stream of ultra-thin movements dating back to 1969. Seiko claims that it is the smallest tourbillon movement by volume ever produced, though it is not the thinnest. It was introduced in 2016 at BaselWorld in the FUGAKU limited-edition watch, Ref. GBCC999.

The Fugaku Tourbillon Limited Edition, Ref. GBCC999, was the first tourbillon watch ever produced by Seiko and Cal. 6830 is the smallest tourbillon by volume ever produced

Cal. 6830 is a notable achievement for Seiko, being the first tourbillon movement ever produced by the company and one of the smallest such movements. But it is also notable in other ways. It contains just 22 jewels, a small number in a field where jewel count is often exaggerated and emphasized. It also contains just 153 components, a very small number for such a complex movement. It is also hand-built by a single watchmaker, and produced by a small team named by Seiko in their press releases. Finally, it is a very traditional movement, tracing its roots back to 1969’s Cal. 68A, and does not include many modern elements or technologies.

  • 2016 Credor Fugaku GBCC999 (Limited Edition of 8 pieces at 50 million Yen)
  • 2017-present Credor Masterpiece GBCC997
  • 2017-present Credor Masterpiece GBCC996
Images are taken from official publications and are used here for commentary and educational purposes. Copyright is held by the original owner as noted.
Manufacturer Link

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