Seiko Cal. 7131 - 413

The Seiko 7131-413 represents an important milestone in Seiko's 1986 lineup. With its 21mm lug width and 13.5mm profile, it sits comfortably on most wrists. [seikata-wm-4ddbf59d9205]

Also known as: Sea Horse

Specifications

Movement

Spring Drive

Case Material

Gold-Plated

Case Width

36mm

Case Thickness

13.5mm

Lug Width

21mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

80m

Dial Color

Blue Sunburst

Jewels

33j

Frequency

36,000 bph

Power Reserve

61 hours

Year

1986

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