Seiko Cal. 4521 - 103

The Seiko 4521-103 represents an important milestone in Seiko's 1985 lineup. With its 22mm lug width and 11.0mm profile, it sits comfortably on most wrists. [seikata-wm-221015691266]

Also known as: Bullhead, Silverwave

Specifications

Movement

Automatic

Case Material

PVD Black

Case Width

35mm

Case Thickness

11.0mm

Lug Width

22mm

Crystal

Hardlex

Bezel

Inner Rotating

Water Resistance

140m

Dial Color

Silver

Jewels

26j

Frequency

36,000 bph

Power Reserve

37 hours

Year

1985

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