Seiko Cal. 4520 - 313

The Seiko 4520-313 represents an important milestone in Seiko's 1983 lineup. The Bidirectional bezel and 36mm case give it a distinctive presence on the wrist. [seikata-wm-9d1d3aa03cbb]

Also known as: Monster, Sumo

Specifications

Movement

Kinetic

Case Material

Hardlex-Coated Steel

Case Width

36mm

Case Thickness

13.3mm

Lug Width

18mm

Crystal

Acrylic

Bezel

Bidirectional

Water Resistance

100m

Dial Color

Blue Sunburst

Jewels

26j

Frequency

28,800 bph

Power Reserve

47 hours

Year

1983

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