Seiko Cal. 7163 - 641

The Seiko 7163-641 represents an important milestone in Seiko's 1974 lineup. The Fixed bezel and 37mm case give it a distinctive presence on the wrist. [seikata-wm-51f197482f18]

Also known as: Sumo, Pogue

Specifications

Movement

Solar

Case Material

Two-Tone

Case Width

37mm

Case Thickness

10.1mm

Lug Width

22mm

Crystal

Hardlex

Bezel

Fixed

Water Resistance

100m

Dial Color

White

Jewels

26j

Frequency

21,600 bph

Power Reserve

38 hours

Year

1974

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