Seiko Cal. 4531 - 383

The Seiko 4531-383 represents an important milestone in Seiko's 1976 lineup. Powered by the 4531 caliber with 21j jewels beating at 21,600 bph, it delivers a 51 hours power reserve. [seikata-wm-3f2972a4ffba]

Also known as: Monster, Helmet

Specifications

Movement

Quartz

Case Material

PVD Black

Case Width

34mm

Case Thickness

15.6mm

Lug Width

18mm

Crystal

Acrylic

Bezel

Rotating

Water Resistance

200m

Dial Color

Black

Jewels

21j

Frequency

21,600 bph

Power Reserve

51 hours

Year

1976

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