Grail Watch Reference

A Reference Library for Watches from Grail Watch

  • Movement Database
  • Grail Watch Blog
  • The Watch Files Podcast
  • Reference Documents
  • About Grail Watch
  • Email
  • Instagram
  • LinkedIn
  • Twitter

Powered by Genesis

You are here: Home / Movements / Seiko 4S29

Seiko 4S29

Last Update: February 5, 2020

Brand:Seiko
Family:
Seiko 4S Family
Height:
Jewels:29
Reserve:40 hours
Frequency:28,800 A/h
Winding:Hand winding
Diameter:25.60 mm (11.5 ligne)
  Complications:Hacking Seconds, Hand Winding, Power Reserve Indicator
Hands:Central Hour Hand, Central Minute Hand, Power Reserve Pointer at 9:30, Small Seconds Hand at 6:00
Distinguishing Technical Characteristics
Hand-Winding
Clockwise Balance Cock
Screw Regulator
Balance
Balance at 4:30
Barrel at 12:00
Production: 2003 – 2007
1910s 1920s 1930s 1940s 1950s 1960s 1970s 1980s 1990s 2000s 2010s 2020s

Cal. 4S29 is a hand-winding movement with small seconds and power reserve indicator produced by Seiko in the 2000s. It was part of the second “wave” of movements in the Seiko 4S family, which itself was derived from the historic Seiko 52 stream of movements. Cal. 4S29 is similar in design to Cal. 4S79, though it lacks two jewels as well as the upscale finishing and regulation of that movement.

The movement has an unusual look thanks to its complications: It has small seconds at 6:00 and a retrograde power reserve indicator at 9:30. This shows the 40 hour power reserve.

The only known watch to use Cal. 4S29 was the Seiko Brightz Mechanical Retrograde, catalog number SAGN005. This watch is only listed in Seiko catalogs from 2003 through 2007. The rest of the SAGN series used Cal. 4S15 (SAGN001) or Cal. 4S27.

Complicated Seiko 4S Movements

After 2000, Seiko had more diverse mechanical movements to choose from. The 4S family was moved upmarket as a base for modules to use in complicated upscale watches. The last 4S movement was retired in 2015.

ProductionWatchWindingJewelsNotes
4S272003-2007SAGNAutomatic28Retrograde day at 2:00
Date pointer at 6:00
GMT subdial at 9:00
4S292003-2007SAGNManual29Small seconds at 6:00
Retrograde power at 9:00
4S362007-2013SAEN
SARN
Automatic31Independent 24 hour hand
Retrograde day at 2:00
Date pointer at 6:00
Retrograde power at 9:00
4S762004-2010GBBT
GCBT
Automatic31Independent 24 hour hand
Retrograde day at 2:00
Date pointer at 6:00
Retrograde power at 9:00
4S771996?
2000-2005
GCBGAutomatic28Retrograde day at 2:00
Date pointer at 6:00
GMT subdial at 9:00
4S791998-2015GBAY
GCAY
Manual31Small seconds at 6:00
Retrograde power at 9:00
Images are taken from official publications and are used here for commentary and educational purposes. Copyright is held by the original owner as noted.
External Link

Related Posts

Zenith 68

Seiko 4S36

Zenith 685

Zenith 683

Zenith 687

Zenith 6850