Seiko Cal. 4520 - 218

This Solar model from 1971 features a 39mm Hardlex-Coated Steel case. Powered by the 4520 caliber with 28j jewels beating at 21,600 bph, it delivers a 67 hours power reserve. [seikata-wm-fef09b7813f8]

Also known as: Helmet

Specifications

Movement

Solar

Case Material

Hardlex-Coated Steel

Case Width

39mm

Case Thickness

14.2mm

Lug Width

18mm

Crystal

Hardlex

Bezel

Bidirectional

Water Resistance

150m

Dial Color

Silver

Jewels

28j

Frequency

21,600 bph

Power Reserve

67 hours

Year

1971

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