Seiko Cal. 5231 - 966

The 5231-966 is a sought-after Spring Drive piece from Seiko's golden era. The Fixed bezel and 37mm case give it a distinctive presence on the wrist. [seikata-wm-dc73153acb9f]

Also known as: Helmet, Golden Tuna

Specifications

Movement

Spring Drive

Case Material

Stainless Steel

Case Width

37mm

Case Thickness

14.2mm

Lug Width

18mm

Crystal

Mineral

Bezel

Fixed

Water Resistance

70m

Dial Color

Champagne

Jewels

22j

Frequency

28,800 bph

Power Reserve

47 hours

Year

1991

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