Seiko Cal. 4431 - 590

This Automatic model from 1995 features a 39mm PVD Black case. With its 22mm lug width and 9.7mm profile, it sits comfortably on most wrists. [seikata-wm-414fc5db8e7e]

Also known as: Monster

Specifications

Movement

Automatic

Case Material

PVD Black

Case Width

39mm

Case Thickness

9.7mm

Lug Width

22mm

Crystal

Acrylic

Bezel

Rotating

Water Resistance

90m

Dial Color

Blue Sunburst

Jewels

29j

Frequency

28,800 bph

Power Reserve

42 hours

Year

1995

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