Seiko Cal. 7131 - 830

The Seiko 7131-830 represents an important milestone in Seiko's 1975 lineup. It features a Blue Sunburst dial protected by a Hardlex crystal and offers 60m of water resistance. [seikata-wm-e7decac6d61b]

Also known as: Bellmatic

Specifications

Movement

Quartz

Case Material

PVD Black

Case Width

43mm

Case Thickness

9.3mm

Lug Width

22mm

Crystal

Hardlex

Bezel

Fixed

Water Resistance

60m

Dial Color

Blue Sunburst

Jewels

20j

Frequency

21,600 bph

Power Reserve

58 hours

Year

1975

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