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You are here: Home / Movements / Seiko 8L35

Seiko 8L35

Last Update: February 2, 2020

Brand:Seiko, Shizukuishi Watch Studio
Family:
Seiko 9S5x Family
Height:
Jewels:26
Reserve:50 hours
Frequency:28,800 A/h
Winding:Automatic, Bi-Directional Automatic Winding, Seiko Magic Lever Winding
Diameter:
© Seiko This 2011 image shows Cal. 8L35 in Brightz Phoenix finish Complications:Date, Hand Winding, Quick Date Correction
Hands:Central Hour Hand, Central Minute Hand, Central Seconds Hand, Date Window at 3:00
Distinguishing Technical Characteristics
Clockwise Balance Cock
Screw Regulator
Balance
Balance at 1:30
Production: 2000 – Current
1910s 1920s 1930s 1940s 1950s 1960s 1970s 1980s 1990s 2000s 2010s 2020s

Cal. 8L35 is an automatic watch movement with date produced by Seiko’s Shizukuichi Watch Studio for the Brightz and Prospex brands starting 2001 and remains in production as of 2020. It was based on the Grand Seiko Cal. 9S55 which was produced at the same time but has been phased out since 2010. The Brightz Cal. 8L21 was similar but lacks the date complication.

Cal. 8L35 was first used in the Prospex Marine Master Pro SBDX line in 2000 and remains in use as of 2020. Note that the Prospex SLA is simply a different model numbering system and these watches also have SBDX numbers. From 2010 through 2013 it was also used in the Brightz Phoenix SAGQ model line.

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
Images are taken from official publications and are used here for commentary and educational purposes. Copyright is held by the original owner as noted.
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