Seiko Cal. 6657 - 388

The Seiko 6657-388 represents an important milestone in Seiko's 1967 lineup. The Fixed bezel and 45mm case give it a distinctive presence on the wrist. [seikata-wm-8ea44fd020e5]

Specifications

Movement

Quartz

Case Material

Stainless Steel

Case Width

45mm

Case Thickness

12.5mm

Lug Width

22mm

Crystal

Hardlex

Bezel

Fixed

Water Resistance

80m

Dial Color

Blue Sunburst

Jewels

30j

Frequency

21,600 bph

Power Reserve

71 hours

Year

1967

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