Seiko Cal. 4521 - 821

The Seiko 4521-821 represents an important milestone in Seiko's 1966 lineup. With its 18mm lug width and 9.0mm profile, it sits comfortably on most wrists. [seikata-wm-664ece905af8]

Also known as: Monster, Shogun

Specifications

Movement

Solar

Case Material

Two-Tone

Case Width

44mm

Case Thickness

9.0mm

Lug Width

18mm

Crystal

Hardlex

Bezel

Inner Rotating

Water Resistance

160m

Dial Color

Burgundy

Jewels

27j

Frequency

21,600 bph

Power Reserve

45 hours

Year

1966

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