Seiko Cal. 4528 - 340

The Seiko 4528-340 represents an important milestone in Seiko's 1971 lineup. Powered by the 4528 caliber with 30j jewels beating at 21,600 bph, it delivers a 38 hours power reserve. [seikata-wm-8cd174762e69]

Also known as: Bullhead, Emperor

Specifications

Movement

Quartz

Case Material

Gold-Plated

Case Width

34mm

Case Thickness

13.8mm

Lug Width

20mm

Crystal

Hardlex

Bezel

Rotating

Water Resistance

40m

Dial Color

Cream

Jewels

30j

Frequency

21,600 bph

Power Reserve

38 hours

Year

1971

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