Seiko Cal. 7031 - 915

This Spring Drive model from 1975 features a 45mm Gold-Plated case. The Bidirectional bezel and 45mm case give it a distinctive presence on the wrist. [seikata-wm-5f37de5acd4b]

Also known as: Bellmatic, Arnie

Specifications

Movement

Spring Drive

Case Material

Gold-Plated

Case Width

45mm

Case Thickness

8.8mm

Lug Width

20mm

Crystal

Acrylic

Bezel

Bidirectional

Water Resistance

140m

Dial Color

Black

Jewels

20j

Frequency

21,600 bph

Power Reserve

50 hours

Year

1975

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