Seiko Cal. 4520 - 617

The Seiko 4520-617 represents an important milestone in Seiko's 1975 lineup. Powered by the 4520 caliber with 34j jewels beating at 21,600 bph, it delivers a 67 hours power reserve. [seikata-wm-b7bb77b83801]

Also known as: Crown

Specifications

Movement

Hand-Winding

Case Material

Gold-Plated

Case Width

35mm

Case Thickness

8.1mm

Lug Width

18mm

Crystal

Sapphire

Bezel

Bidirectional

Water Resistance

200m

Dial Color

Cream

Jewels

34j

Frequency

21,600 bph

Power Reserve

67 hours

Year

1975

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