Seiko Cal. 7138 - 490

This Spring Drive model from 1966 features a 36mm PVD Black case. With its 18mm lug width and 8.8mm profile, it sits comfortably on most wrists. [seikata-wm-88d4b564491e]

Also known as: Helmet

Specifications

Movement

Spring Drive

Case Material

PVD Black

Case Width

36mm

Case Thickness

8.8mm

Lug Width

18mm

Crystal

Mineral

Bezel

Fixed

Water Resistance

180m

Dial Color

Burgundy

Jewels

17j

Frequency

36,000 bph

Power Reserve

63 hours

Year

1966

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