Seiko Cal. 6390 - 621

The Seiko 6390-621 represents an important milestone in Seiko's 1977 lineup. The Fixed bezel and 35mm case give it a distinctive presence on the wrist. [seikata-wm-eb0bcd19919a]

Also known as: Shogun

Specifications

Movement

Hand-Winding

Case Material

Titanium

Case Width

35mm

Case Thickness

15.7mm

Lug Width

20mm

Crystal

Mineral

Bezel

Fixed

Water Resistance

100m

Dial Color

Blue Sunburst

Jewels

28j

Frequency

21,600 bph

Power Reserve

40 hours

Year

1977

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