Seiko Cal. 6664 - 674

The Seiko 6664-674 represents an important milestone in Seiko's 1967 lineup. The Coin-Edge bezel and 40mm case give it a distinctive presence on the wrist. [seikata-wm-abfe8525bbce]

Also known as: Tuna, Baby Tuna

Specifications

Movement

Quartz

Case Material

Two-Tone

Case Width

40mm

Case Thickness

12.7mm

Lug Width

22mm

Crystal

Mineral

Bezel

Coin-Edge

Water Resistance

100m

Dial Color

Blue Sunburst

Jewels

27j

Frequency

21,600 bph

Power Reserve

57 hours

Year

1967

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