Seiko Cal. 6131 - 594

Released in 1978, the Cal. 6131 with design code 594 was part of Seiko's domestic market collection. The Rotating bezel and 41mm case give it a distinctive presence on the wrist. [seikata-wm-9abaf849dd14]

Also known as: World Timer, Baby Tuna

Specifications

Movement

Hand-Winding

Case Material

Titanium

Case Width

41mm

Case Thickness

11.9mm

Lug Width

21mm

Crystal

Hardlex

Bezel

Rotating

Water Resistance

70m

Dial Color

Cream

Jewels

29j

Frequency

21,600 bph

Power Reserve

64 hours

Year

1978

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