Seiko Cal. 6131 - 426

This Spring Drive model from 1974 features a 37mm Gold-Plated case. It features a Blue Sunburst dial protected by a Mineral crystal and offers 90m of water resistance. [seikata-wm-5981880e349c]

Also known as: Bellmatic

Specifications

Movement

Spring Drive

Case Material

Gold-Plated

Case Width

37mm

Case Thickness

8.4mm

Lug Width

18mm

Crystal

Mineral

Bezel

Bidirectional

Water Resistance

90m

Dial Color

Blue Sunburst

Jewels

20j

Frequency

21,600 bph

Power Reserve

36 hours

Year

1974

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