Seiko Cal. 4420 - 543

This Solar model from 1971 features a 40mm PVD Black case. Powered by the 4420 caliber with 22j jewels beating at 36,000 bph, it delivers a 42 hours power reserve. [seikata-wm-b0a0a329d211]

Also known as: World Timer

Specifications

Movement

Solar

Case Material

PVD Black

Case Width

40mm

Case Thickness

12.6mm

Lug Width

21mm

Crystal

Hardlex

Bezel

Bidirectional

Water Resistance

30m

Dial Color

Champagne

Jewels

22j

Frequency

36,000 bph

Power Reserve

42 hours

Year

1971

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