Seiko Cal. 4520 - 183

The Seiko 4520-183 represents an important milestone in Seiko's 1967 lineup. The Inner Rotating bezel and 39mm case give it a distinctive presence on the wrist. [seikata-wm-8aa66ba2e572]

Also known as: Sumo, Emperor

Specifications

Movement

Quartz

Case Material

Titanium

Case Width

39mm

Case Thickness

15.3mm

Lug Width

20mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

90m

Dial Color

Cream

Jewels

22j

Frequency

36,000 bph

Power Reserve

67 hours

Year

1967

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