Seiko Cal. 4431 - 566

This Automatic model from 1965 features a 36mm PVD Black case. With its 21mm lug width and 14.9mm profile, it sits comfortably on most wrists. [seikata-wm-8a3965875dae]

Specifications

Movement

Automatic

Case Material

PVD Black

Case Width

36mm

Case Thickness

14.9mm

Lug Width

21mm

Crystal

Acrylic

Bezel

Coin-Edge

Water Resistance

50m

Dial Color

Green

Jewels

33j

Frequency

36,000 bph

Power Reserve

38 hours

Year

1965

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