Seiko Cal. 7156 - 174

The Seiko 7156-174 represents an important milestone in Seiko's 1981 lineup. The Inner Rotating bezel and 38mm case give it a distinctive presence on the wrist. [seikata-wm-65ed6e3b527e]

Also known as: Helmet

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

38mm

Case Thickness

8.1mm

Lug Width

18mm

Crystal

Mineral

Bezel

Inner Rotating

Water Resistance

150m

Dial Color

Champagne

Jewels

31j

Frequency

36,000 bph

Power Reserve

52 hours

Year

1981

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