Seiko Cal. 4520 - 520

This Kinetic model from 1968 features a 40mm Hardlex-Coated Steel case. Powered by the 4520 caliber with 20j jewels beating at 28,800 bph, it delivers a 66 hours power reserve. [seikata-wm-fbb8e4ad1ffc]

Also known as: Goldfeather, Golden Tuna

Specifications

Movement

Kinetic

Case Material

Hardlex-Coated Steel

Case Width

40mm

Case Thickness

12.6mm

Lug Width

21mm

Crystal

Mineral

Bezel

Fixed

Water Resistance

180m

Dial Color

Green

Jewels

20j

Frequency

28,800 bph

Power Reserve

66 hours

Year

1968

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