Seiko Cal. 6694 - 657

The Seiko 6694-657 represents an important milestone in Seiko's 1972 lineup. The Fixed bezel and 36mm case give it a distinctive presence on the wrist. [seikata-wm-2b8f09a546f6]

Also known as: Tuna

Specifications

Movement

Kinetic

Case Material

Hardlex-Coated Steel

Case Width

36mm

Case Thickness

15.1mm

Lug Width

21mm

Crystal

Sapphire

Bezel

Fixed

Water Resistance

30m

Dial Color

Black

Jewels

21j

Frequency

28,800 bph

Power Reserve

54 hours

Year

1972

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