Seiko Cal. 4420 - 831

The Seiko 4420-831 represents an important milestone in Seiko's 1975 lineup. Powered by the 4420 caliber with 22j jewels beating at 21,600 bph, it delivers a 42 hours power reserve. [seikata-wm-5639f30de237]

Also known as: Goldfeather

Specifications

Movement

Kinetic

Case Material

Hardlex-Coated Steel

Case Width

43mm

Case Thickness

10.1mm

Lug Width

21mm

Crystal

Sapphire

Bezel

Rotating

Water Resistance

120m

Dial Color

Silver

Jewels

22j

Frequency

21,600 bph

Power Reserve

42 hours

Year

1975

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