Seiko Cal. 7131 - 933

This Spring Drive model from 1965 features a 44mm PVD Black case. The Rotating bezel and 44mm case give it a distinctive presence on the wrist. [seikata-wm-3f0c159c6435]

Also known as: Baby Tuna, Emperor

Specifications

Movement

Spring Drive

Case Material

PVD Black

Case Width

44mm

Case Thickness

8.4mm

Lug Width

20mm

Crystal

Hardlex

Bezel

Rotating

Water Resistance

30m

Dial Color

White

Jewels

25j

Frequency

21,600 bph

Power Reserve

62 hours

Year

1965

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