Seiko Cal. 6291 - 331

The Seiko 6291-331 represents an important milestone in Seiko's 1980 lineup. Powered by the 6291 caliber with 30j jewels beating at 36,000 bph, it delivers a 66 hours power reserve. [seikata-wm-8b746f2df705]

Also known as: Golden Tuna

Specifications

Movement

Spring Drive

Case Material

Titanium

Case Width

37mm

Case Thickness

13.6mm

Lug Width

18mm

Crystal

Acrylic

Bezel

Inner Rotating

Water Resistance

60m

Dial Color

Burgundy

Jewels

30j

Frequency

36,000 bph

Power Reserve

66 hours

Year

1980

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