Seiko Cal. 4520 - 321

This Hand-Winding model from 1967 features a 38mm Gold-Plated case. Powered by the 4520 caliber with 18j jewels beating at 36,000 bph, it delivers a 53 hours power reserve. [seikata-wm-a95c5578d1d7]

Also known as: World Timer, Navigator

Specifications

Movement

Hand-Winding

Case Material

Gold-Plated

Case Width

38mm

Case Thickness

14.5mm

Lug Width

18mm

Crystal

Mineral

Bezel

Rotating

Water Resistance

180m

Dial Color

White

Jewels

18j

Frequency

36,000 bph

Power Reserve

53 hours

Year

1967

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