Seiko Cal. 7031 - 804

The Seiko 7031-804 represents an important milestone in Seiko's 1971 lineup. With its 18mm lug width and 14.9mm profile, it sits comfortably on most wrists. [seikata-wm-ca2264eb376b]

Also known as: Tuna, Bullhead

Specifications

Movement

Solar

Case Material

Stainless Steel

Case Width

41mm

Case Thickness

14.9mm

Lug Width

18mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

100m

Dial Color

Blue Sunburst

Jewels

27j

Frequency

28,800 bph

Power Reserve

62 hours

Year

1971

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