Seiko Cal. 7131 - 837

The 7131-837 is a sought-after Spring Drive piece from Seiko's golden era. The Rotating bezel and 45mm case give it a distinctive presence on the wrist. [seikata-wm-0dacc746eef4]

Also known as: Golden Tuna

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

45mm

Case Thickness

12.9mm

Lug Width

19mm

Crystal

Hardlex

Bezel

Rotating

Water Resistance

190m

Dial Color

Black

Jewels

32j

Frequency

21,600 bph

Power Reserve

58 hours

Year

1987

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