Seiko Cal. 4531 - 539

The Seiko 4531-539 represents an important milestone in Seiko's 1966 lineup. Powered by the 4531 caliber with 28j jewels beating at 28,800 bph, it delivers a 53 hours power reserve. [seikata-wm-7909e77f418f]

Also known as: Pogue

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

40mm

Case Thickness

13.3mm

Lug Width

20mm

Crystal

Acrylic

Bezel

Inner Rotating

Water Resistance

150m

Dial Color

Cream

Jewels

28j

Frequency

28,800 bph

Power Reserve

53 hours

Year

1966

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