Seiko Cal. 6231 - 478

The 6231-478 is a sought-after Hand-Winding piece from Seiko's golden era. With its 18mm lug width and 9.1mm profile, it sits comfortably on most wrists. [seikata-wm-4aa8e120b590]

Also known as: Tuna, Crown

Specifications

Movement

Hand-Winding

Case Material

PVD Black

Case Width

35mm

Case Thickness

9.1mm

Lug Width

18mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

150m

Dial Color

Blue Sunburst

Jewels

36j

Frequency

28,800 bph

Power Reserve

59 hours

Year

1988

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