Seiko Cal. 7156 - 378

The Seiko 7156-378 represents an important milestone in Seiko's 1977 lineup. The Fixed bezel and 45mm case give it a distinctive presence on the wrist. [seikata-wm-740ac8611ca2]

Specifications

Movement

Automatic

Case Material

Two-Tone

Case Width

45mm

Case Thickness

9.0mm

Lug Width

22mm

Crystal

Acrylic

Bezel

Fixed

Water Resistance

140m

Dial Color

Blue Sunburst

Jewels

27j

Frequency

21,600 bph

Power Reserve

55 hours

Year

1977

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