Seiko Cal. 4591 - 450

This Spring Drive model from 1977 features a 36mm PVD Black case. The Coin-Edge bezel and 36mm case give it a distinctive presence on the wrist. [seikata-wm-a0b769201314]

Specifications

Movement

Spring Drive

Case Material

PVD Black

Case Width

36mm

Case Thickness

15.0mm

Lug Width

21mm

Crystal

Hardlex

Bezel

Coin-Edge

Water Resistance

150m

Dial Color

Navy

Jewels

31j

Frequency

36,000 bph

Power Reserve

38 hours

Year

1977

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