Seiko Cal. 4579 - 387

This Hand-Winding model from 1971 features a 40mm Titanium case. Powered by the 4579 caliber with 27j jewels beating at 21,600 bph, it delivers a 53 hours power reserve. [seikata-wm-bd1af4c48d10]

Also known as: Helmet, World Timer

Specifications

Movement

Hand-Winding

Case Material

Titanium

Case Width

40mm

Case Thickness

10.4mm

Lug Width

18mm

Crystal

Hardlex

Bezel

Inner Rotating

Water Resistance

100m

Dial Color

Green

Jewels

27j

Frequency

21,600 bph

Power Reserve

53 hours

Year

1971

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