Seiko Cal. 4520 - 677

This Spring Drive model from 1974 features a 46mm Stainless Steel case. Powered by the 4520 caliber with 34j jewels beating at 36,000 bph, it delivers a 70 hours power reserve. [seikata-wm-87a362f73790]

Also known as: Navigator

Specifications

Movement

Spring Drive

Case Material

Stainless Steel

Case Width

46mm

Case Thickness

11.3mm

Lug Width

22mm

Crystal

Hardlex

Bezel

Inner Rotating

Water Resistance

90m

Dial Color

Green

Jewels

34j

Frequency

36,000 bph

Power Reserve

70 hours

Year

1974

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