Seiko Cal. 4521 - 726

The Seiko 4521-726 represents an important milestone in Seiko's 1974 lineup. With its 21mm lug width and 11.1mm profile, it sits comfortably on most wrists. [seikata-wm-0b7bfe7b50a9]

Also known as: Sumo, Shogun

Specifications

Movement

Automatic

Case Material

Hardlex-Coated Steel

Case Width

39mm

Case Thickness

11.1mm

Lug Width

21mm

Crystal

Hardlex

Bezel

Fixed

Water Resistance

100m

Dial Color

Champagne

Jewels

31j

Frequency

36,000 bph

Power Reserve

65 hours

Year

1974

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