Seiko Cal. 0728 - 870

The Seiko 0728-870 represents an important milestone in Seiko's 1971 lineup. With its 18mm lug width and 8.3mm profile, it sits comfortably on most wrists. [seikata-wm-df226d6a4c85]

Also known as: Bullhead, Sea Horse

Specifications

Movement

Spring Drive

Case Material

Stainless Steel

Case Width

38mm

Case Thickness

8.3mm

Lug Width

18mm

Crystal

Hardlex

Bezel

Inner Rotating

Water Resistance

100m

Dial Color

Blue Sunburst

Jewels

25j

Frequency

21,600 bph

Power Reserve

66 hours

Year

1971

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