Seiko Cal. 4521 - 401

The Seiko 4521-401 represents an important milestone in Seiko's 1987 lineup. With its 20mm lug width and 9.4mm profile, it sits comfortably on most wrists. [seikata-wm-e6a02fb244f0]

Also known as: Baby Tuna, Flighty

Specifications

Movement

Hand-Winding

Case Material

Gold-Plated

Case Width

46mm

Case Thickness

9.4mm

Lug Width

20mm

Crystal

Sapphire

Bezel

Bidirectional

Water Resistance

130m

Dial Color

Cream

Jewels

20j

Frequency

21,600 bph

Power Reserve

44 hours

Year

1987

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