Seiko Cal. 6390 - 179

The Seiko 6390-179 represents an important milestone in Seiko's 1977 lineup. The Fixed bezel and 37mm case give it a distinctive presence on the wrist. [seikata-wm-84eb4e5d5f1e]

Also known as: Sumo, Sportsmatic

Specifications

Movement

Hand-Winding

Case Material

PVD Black

Case Width

37mm

Case Thickness

15.9mm

Lug Width

18mm

Crystal

Acrylic

Bezel

Fixed

Water Resistance

130m

Dial Color

White

Jewels

26j

Frequency

36,000 bph

Power Reserve

66 hours

Year

1977

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