Seiko Cal. 7140 - 931

This Spring Drive model from 1981 features a 39mm Gold-Plated case. With its 22mm lug width and 12.1mm profile, it sits comfortably on most wrists. [seikata-wm-110933ea4851]

Also known as: Bullhead

Specifications

Movement

Spring Drive

Case Material

Gold-Plated

Case Width

39mm

Case Thickness

12.1mm

Lug Width

22mm

Crystal

Hardlex

Bezel

Bidirectional

Water Resistance

150m

Dial Color

White

Jewels

32j

Frequency

21,600 bph

Power Reserve

65 hours

Year

1981

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