Seiko Cal. 4521 - 350

The Seiko 4521-350 represents an important milestone in Seiko's 1974 lineup. With its 22mm lug width and 12.9mm profile, it sits comfortably on most wrists. [seikata-wm-6cf789ab73da]

Also known as: Tuna, Goldfeather

Specifications

Movement

Spring Drive

Case Material

Stainless Steel

Case Width

36mm

Case Thickness

12.9mm

Lug Width

22mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

40m

Dial Color

White

Jewels

34j

Frequency

28,800 bph

Power Reserve

72 hours

Year

1974

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