Seiko Cal. 6664 - 765

The Seiko 6664-765 represents an important milestone in Seiko's 1980 lineup. The Bidirectional bezel and 46mm case give it a distinctive presence on the wrist. [seikata-wm-3e1e9ab0373a]

Also known as: Tuna

Specifications

Movement

Hand-Winding

Case Material

Two-Tone

Case Width

46mm

Case Thickness

12.2mm

Lug Width

21mm

Crystal

Hardlex

Bezel

Bidirectional

Water Resistance

130m

Dial Color

Blue Sunburst

Jewels

23j

Frequency

28,800 bph

Power Reserve

55 hours

Year

1980

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