Seiko Cal. 4431 - 133

The Seiko 4431-133 represents an important milestone in Seiko's 1991 lineup. With its 20mm lug width and 13.1mm profile, it sits comfortably on most wrists. [seikata-wm-287ace658daa]

Also known as: Arnie

Specifications

Movement

Spring Drive

Case Material

PVD Black

Case Width

37mm

Case Thickness

13.1mm

Lug Width

20mm

Crystal

Mineral

Bezel

Rotating

Water Resistance

160m

Dial Color

Black

Jewels

32j

Frequency

36,000 bph

Power Reserve

60 hours

Year

1991

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