Seiko Cal. 4431 - 520

The Seiko 4431-520 represents an important milestone in Seiko's 1966 lineup. Powered by the 4431 caliber with 30j jewels beating at 28,800 bph, it delivers a 48 hours power reserve. [seikata-wm-215049c0e032]

Also known as: Goldfeather, Arnie

Specifications

Movement

Quartz

Case Material

Two-Tone

Case Width

34mm

Case Thickness

11.6mm

Lug Width

21mm

Crystal

Hardlex

Bezel

Fixed

Water Resistance

40m

Dial Color

Navy

Jewels

30j

Frequency

28,800 bph

Power Reserve

48 hours

Year

1966

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