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You are here: Home / Families / Seiko 6R Family

Seiko 6R Family

Last Update: July 7, 2019

BRANDS: Seiko, Seiko Instruments Inc., Time Module Inc.

Production: 2006 – Current
1910s 1920s 1930s 1940s 1950s 1960s 1970s 1980s 1990s 2000s 2010s 2020s

Seiko’s 6R family of movements is an upscale line for higher-end watches. Launched in 2006, Cal. 6R15 was a modification of the mainstream 7S family but with better finishing and a Spron 510 mainspring. Seiko later created Cal. 6R20 and other movements with modules on the 6R15 and a Hi-Beat 28,800 A/h escapement. These movements also add hacking and hand winding as on the derived 4R family.

In 2019, Seiko revisited the aging 6R family, adding the new Cal. 6R35. A simple movement like Cal. 6R15, it operates at 21,600 A/h and has only a date complication. It adds one additional jewel, however, and boasts a 70 hour power reserve.

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

Calibre Start Year End Year Diameter (mm) Diameter (ligne) Height (mm) Complications
Seiko 6R15 2006 Current 27.40 12 5.25 Date, Hacking Seconds, Hand Winding, Quick Date Correction
Seiko 6R20 2007 Current 27.40 12 6.15 Date, Date by Pointer, Day, Day by Pointer, Hacking Seconds, Hand Winding, Power Reserve Indicator, Quick Date Correction
Seiko 6R21 2009 Current 27.40 12 6.15 Date, Date by Pointer, Day, Day by Pointer, Hacking Seconds, Hand Winding, Power Reserve Indicator, Quick Date Correction, Quick Day Correction
Seiko 6R24 2009 Current 27.40 12 6.15 Date, Day, Hacking Seconds, Hand Winding, Power Reserve Indicator, Quick Date Correction, Quick Day Correction, Retrograde Date, Retrograde Day
Seiko 6R27 2013 2016 27.40 12 5.32 Date, Date by Pointer, Power Reserve Indicator, Quick Date Correction
Seiko 6R35 2019 Current Date, Hacking Seconds, Hand Winding, Quick Date Correction

Seiko 6R15

Seiko 6R20

Seiko 6R21

Seiko 6R24

Seiko 6R27

Seiko 6R35

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