Seiko Cal. 6657 - 734

The Seiko 6657-734 represents an important milestone in Seiko's 1976 lineup. With its 21mm lug width and 11.1mm profile, it sits comfortably on most wrists. [seikata-wm-35bd0557a3e0]

Also known as: Crown, Flighty

Specifications

Movement

Spring Drive

Case Material

Two-Tone

Case Width

37mm

Case Thickness

11.1mm

Lug Width

21mm

Crystal

Acrylic

Bezel

Bidirectional

Water Resistance

100m

Dial Color

Champagne

Jewels

17j

Frequency

28,800 bph

Power Reserve

59 hours

Year

1976

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