Seiko Cal. 7156 - 490

This Spring Drive model from 1967 features a 46mm PVD Black case. The Fixed bezel and 46mm case give it a distinctive presence on the wrist. [seikata-wm-efa775ca5bf9]

Also known as: Tuna, Baby Tuna

Specifications

Movement

Spring Drive

Case Material

PVD Black

Case Width

46mm

Case Thickness

15.2mm

Lug Width

18mm

Crystal

Hardlex

Bezel

Fixed

Water Resistance

30m

Dial Color

Blue Sunburst

Jewels

29j

Frequency

36,000 bph

Power Reserve

40 hours

Year

1967

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