Seiko Cal. 4420 - 503

This Solar model from 1969 features a 43mm Hardlex-Coated Steel case. Powered by the 4420 caliber with 31j jewels beating at 21,600 bph, it delivers a 47 hours power reserve. [seikata-wm-45ee85f2c27b]

Also known as: Bullhead, Flighty

Specifications

Movement

Solar

Case Material

Hardlex-Coated Steel

Case Width

43mm

Case Thickness

11.7mm

Lug Width

18mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

200m

Dial Color

Green

Jewels

31j

Frequency

21,600 bph

Power Reserve

47 hours

Year

1969

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