Seiko Cal. 7156 - 638

The Seiko 7156-638 represents an important milestone in Seiko's 1974 lineup. The Inner Rotating bezel and 45mm case give it a distinctive presence on the wrist. [seikata-wm-433ac4ec2673]

Specifications

Movement

Automatic

Case Material

Titanium

Case Width

45mm

Case Thickness

14.2mm

Lug Width

19mm

Crystal

Mineral

Bezel

Inner Rotating

Water Resistance

130m

Dial Color

White

Jewels

19j

Frequency

21,600 bph

Power Reserve

44 hours

Year

1974

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