Seiko Cal. 6391 - 156

This Spring Drive model from 1975 features a 46mm Hardlex-Coated Steel case. With its 22mm lug width and 8.3mm profile, it sits comfortably on most wrists. [seikata-wm-190de8a3c662]

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

46mm

Case Thickness

8.3mm

Lug Width

22mm

Crystal

Hardlex

Bezel

Inner Rotating

Water Resistance

100m

Dial Color

Green

Jewels

35j

Frequency

28,800 bph

Power Reserve

45 hours

Year

1975

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