Seiko Cal. 6391 - 974

The Seiko 6391-974 represents an important milestone in Seiko's 1967 lineup. With its 21mm lug width and 15.3mm profile, it sits comfortably on most wrists. [seikata-wm-a8d198c79e82]

Also known as: Tuna, Arnie

Specifications

Movement

Hand-Winding

Case Material

PVD Black

Case Width

41mm

Case Thickness

15.3mm

Lug Width

21mm

Crystal

Hardlex

Bezel

Fixed

Water Resistance

50m

Dial Color

Champagne

Jewels

35j

Frequency

36,000 bph

Power Reserve

72 hours

Year

1967

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