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You are here: Home / Movements / Seiko 8L36

Seiko 8L36

Last Update: February 2, 2020

Brand:Credor, Seiko, Shizukuishi Watch Studio
Family:
Seiko 9S5x Family
Height:
Jewels:27
Reserve:50 hours
Frequency:28,800 A/h
Winding:Automatic, Bi-Directional Automatic Winding, Seiko Magic Lever Winding
Diameter:
  Complications:24 Hour Hand, GMT Hand, Hand Winding, Independently-Adjustable 12 Hour Hand
Hands:Central Hour Hand, Central Minute Hand, Central Seconds Hand
Distinguishing Technical Characteristics
Clockwise Balance Cock
Screw Regulator
Balance
Balance at 1:30
Production: 2011 – Current
1910s 1920s 1930s 1940s 1950s 1960s 1970s 1980s 1990s 2000s 2010s 2020s

Cal. 8L36 is an automatic watch movement with GMT produced by Seiko’s Shizukuichi Watch Studio for the Credor and Galante brands starting 2011. It remains in production as of 2020. It was based on the Grand Seiko Cal. 9S56 which was produced at the same time but has been phased out since 2010. The Galante Cal. 8L38 was similar but lacks the GMT complication and is designed for “open heart” use.

Cal. 8L36 was originally used in the Credor Signor GCBZ models, from 2011 through 2016. That same year the Galante SBLM models were introduced, and they remain in production as of 2020.

ProductionApplicationWindingJewelsNotes
8L212003-2007Brightz SAGLAutomatic24Similar to 9S51
8L342000Railway pocket watchManual20Small seconds
8L352000-presentBrightz SAGQ
Prospex SBDX
Prospex SLA
Automatic26Date, similar to 9S55
8L362011-presentCredor GCBZ
Galante SBLM
Automatic27GMT, similar to 9S56
8L382010-2015Galante SBLLAutomatic26Open Heart
8L75-2005Credor GCBRAutomatic26Date, similar to 9S55
9S511998-2009GS SBGRAutomatic24No date
9S542001-2010GS SBGWManual20No date
9S551998-2010GS SBGRAutomatic26Date
9S562002-2010GS SBGMAutomatic27GMT, no date

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