Seiko Cal. 4521 - 981

The Seiko 4521-981 represents an important milestone in Seiko's 1978 lineup. The Fixed bezel and 37mm case give it a distinctive presence on the wrist. [seikata-wm-a7aa0be646e7]

Also known as: Silverwave

Specifications

Movement

Hand-Winding

Case Material

Stainless Steel

Case Width

37mm

Case Thickness

13.5mm

Lug Width

22mm

Crystal

Sapphire

Bezel

Fixed

Water Resistance

160m

Dial Color

Black

Jewels

29j

Frequency

36,000 bph

Power Reserve

36 hours

Year

1978

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