Seiko Cal. 4437 - 618

This Solar model from 1981 features a 43mm Stainless Steel case. Powered by the 4437 caliber with 25j jewels beating at 21,600 bph, it delivers a 62 hours power reserve. [seikata-wm-43fadeddb328]

Also known as: Bullhead, World Timer

Specifications

Movement

Solar

Case Material

Stainless Steel

Case Width

43mm

Case Thickness

13.1mm

Lug Width

19mm

Crystal

Acrylic

Bezel

Inner Rotating

Water Resistance

140m

Dial Color

Blue Sunburst

Jewels

25j

Frequency

21,600 bph

Power Reserve

62 hours

Year

1981

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