Seiko Cal. 7131 - 854

This Spring Drive model from 1972 features a 36mm Gold-Plated case. With its 22mm lug width and 12.5mm profile, it sits comfortably on most wrists. [seikata-wm-edbac1d7da98]

Also known as: Bellmatic, Golden Tuna

Specifications

Movement

Spring Drive

Case Material

Gold-Plated

Case Width

36mm

Case Thickness

12.5mm

Lug Width

22mm

Crystal

Mineral

Bezel

Bidirectional

Water Resistance

50m

Dial Color

Blue Sunburst

Jewels

24j

Frequency

21,600 bph

Power Reserve

54 hours

Year

1972

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