Seiko Cal. 4431 - 580

This Solar model from 1976 features a 41mm Hardlex-Coated Steel case. Powered by the 4431 caliber with 30j jewels beating at 21,600 bph, it delivers a 40 hours power reserve. [seikata-wm-af8848729ac1]

Also known as: Helmet, Arnie

Specifications

Movement

Solar

Case Material

Hardlex-Coated Steel

Case Width

41mm

Case Thickness

14.2mm

Lug Width

20mm

Crystal

Acrylic

Bezel

Coin-Edge

Water Resistance

140m

Dial Color

Cream

Jewels

30j

Frequency

21,600 bph

Power Reserve

40 hours

Year

1976

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