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You are here: Home / Movements / Seiko 6R24

Seiko 6R24

Last Update: July 9, 2019

Brand:Seiko, Seiko Instruments Inc.
Family:
Seiko 6R Family
Height:6.15 mm
Jewels:31
Reserve:45 hours
Frequency:28,800 A/h
Winding:Automatic, Bi-Directional Automatic Winding, Central Rotor Automatic Winding
Diameter:27.40 mm (12 ligne)
  Complications:Date, Day, Hacking Seconds, Hand Winding, Power Reserve Indicator, Quick Date Correction, Quick Day Correction, Retrograde Date, Retrograde Day
Hands:Central Hour Hand, Central Minute Hand, Central Seconds Hand, Date Pointer at 6:00, Day Pointer at 3:00, Power Reserve Pointer at 9:30
Distinguishing Technical Characteristics
Central-Rotor Automatic
Counter-Clockwise Balance Cock
Etachron Regulator
Balance
Balance at 3:00
Central Rotor
Production: 2009 – Current
1910s 1920s 1930s 1940s 1950s 1960s 1970s 1980s 1990s 2000s 2010s 2020s

Seiko Cal. 6R24 is a midrange automatic movement produced by Seiko Instruments Inc. (SII) for Seiko watches. Like other Seiko 6R movements, it is more refined and accurate than the related Seiko 4R series and uses a Spron 510 mainspring. Unlike Cal. 6R15, it is a “Hi-Beat” movement operating at 28,800 A/h and has complications: Retrograde day at 2:30, retrograde date at 6:00, and retrograde power reserve at 9:30.

Cal. 6R24 was introduced around 2009 and remains in production today. It has 31 jewels and 224 parts. Cal. 6R24 was used in the Ananta Double Retrograde Automatic watches, models SPB013J1 and SPB015J1, produced August 2009 through July 2012.

According to Seiko documents, this is a modular movement based on Cal. 6R15 but with a Hi-Beat balance and hacking seconds.

JewelsComponentsSpeedPower3:006:009:00
6R152316821,60050Date Window
6R202920828,80045Day SubdialDate SubdialClockwise
Power Reserve
6R212920828,80045Day SubdialDate SubdialCounter-Clockwise
Power Reserve
6R243122428,80045Retrograde DayRetrograde DateClockwise
Power Reserve
6R272928,80045Date SubdialCounter-Clockwise
Power Reserve
6R352421,60070Date Window
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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