Seiko Cal. 7138 - 379

This Hand-Winding model from 1990 features a 41mm PVD Black case. With its 21mm lug width and 8.1mm profile, it sits comfortably on most wrists. [seikata-wm-cd5fad96c302]

Also known as: Tuna

Specifications

Movement

Hand-Winding

Case Material

PVD Black

Case Width

41mm

Case Thickness

8.1mm

Lug Width

21mm

Crystal

Hardlex

Bezel

Bidirectional

Water Resistance

100m

Dial Color

Green

Jewels

25j

Frequency

28,800 bph

Power Reserve

54 hours

Year

1990

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