Seiko Cal. 0778 - 637

The Seiko 0778-637 represents an important milestone in Seiko's 1969 lineup. The Fixed bezel and 35mm case give it a distinctive presence on the wrist. [seikata-wm-da57c61ff6c8]

Also known as: Tuna, Bullhead

Specifications

Movement

Kinetic

Case Material

Two-Tone

Case Width

35mm

Case Thickness

9.2mm

Lug Width

20mm

Crystal

Hardlex

Bezel

Fixed

Water Resistance

110m

Dial Color

Blue Sunburst

Jewels

20j

Frequency

36,000 bph

Power Reserve

67 hours

Year

1969

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