Seiko Cal. 6381 - 581

The Seiko 6381-581 represents an important milestone in Seiko's 1976 lineup. The Bidirectional bezel and 41mm case give it a distinctive presence on the wrist. [seikata-wm-30755f4e4c14]

Also known as: Baby Tuna, Arnie

Specifications

Movement

Quartz

Case Material

Titanium

Case Width

41mm

Case Thickness

8.1mm

Lug Width

19mm

Crystal

Hardlex

Bezel

Bidirectional

Water Resistance

130m

Dial Color

Cream

Jewels

27j

Frequency

28,800 bph

Power Reserve

38 hours

Year

1976

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