Seiko Cal. 4521 - 936

The Seiko 4521-936 represents an important milestone in Seiko's 1981 lineup. The Bidirectional bezel and 37mm case give it a distinctive presence on the wrist. [seikata-wm-187fd845ce46]

Specifications

Movement

Hand-Winding

Case Material

Two-Tone

Case Width

37mm

Case Thickness

12.2mm

Lug Width

18mm

Crystal

Mineral

Bezel

Bidirectional

Water Resistance

80m

Dial Color

Green

Jewels

20j

Frequency

28,800 bph

Power Reserve

58 hours

Year

1981

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