Seiko Cal. 6231 - 813

Seiko 6231-813

The 6231-813 is a sought-after Spring Drive piece from Seiko's golden era. Powered by the 6231 caliber with 26j jewels beating at 21,600 bph, it delivers a 47 hours power reserve. [seikata-wm-07d156b50ab8]

Also known as: Turtle, Sumo

Specifications

Movement
Spring Drive
Case Material
Two-Tone
Case Width
37mm
Case Thickness
15.2mm
Lug Width
20mm
Crystal
Acrylic
Bezel
Rotating
Water Resistance
100m
Dial Color
Black
Jewels
26j
Frequency
21,600 bph
Power Reserve
47 hours
Year
1978

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seikata-wm-07d156b50ab8