Seiko Cal. 4528 - 500

This Spring Drive model from 1980 features a 41mm PVD Black case. Powered by the 4528 caliber with 31j jewels beating at 21,600 bph, it delivers a 72 hours power reserve. [seikata-wm-bbdbeda6236b]

Also known as: Monster

Specifications

Movement

Spring Drive

Case Material

PVD Black

Case Width

41mm

Case Thickness

12.1mm

Lug Width

20mm

Crystal

Sapphire

Bezel

Rotating

Water Resistance

30m

Dial Color

Green

Jewels

31j

Frequency

21,600 bph

Power Reserve

72 hours

Year

1980

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