Seiko Cal. 6231 - 939

The Seiko 6231-939 represents an important milestone in Seiko's 1982 lineup. The Coin-Edge bezel and 40mm case give it a distinctive presence on the wrist. [seikata-wm-459c6acbb39f]

Also known as: Baby Tuna

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

40mm

Case Thickness

9.3mm

Lug Width

21mm

Crystal

Sapphire

Bezel

Coin-Edge

Water Resistance

90m

Dial Color

Cream

Jewels

26j

Frequency

36,000 bph

Power Reserve

62 hours

Year

1982

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