Seiko Cal. 7156 - 378

This Spring Drive model from 1966 features a 38mm Stainless Steel case. With its 19mm lug width and 9.0mm profile, it sits comfortably on most wrists. [seikata-wm-717fe7da4ad8]

Also known as: Monster

Specifications

Movement

Spring Drive

Case Material

Stainless Steel

Case Width

38mm

Case Thickness

9.0mm

Lug Width

19mm

Crystal

Acrylic

Bezel

Bidirectional

Water Resistance

170m

Dial Color

Green

Jewels

22j

Frequency

21,600 bph

Power Reserve

61 hours

Year

1966

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