Seiko Cal. 4431 - 188

The Seiko 4431-188 represents an important milestone in Seiko's 1989 lineup. The Bidirectional bezel and 40mm case give it a distinctive presence on the wrist. [seikata-wm-8d06c97581e9]

Also known as: Crown

Specifications

Movement

Spring Drive

Case Material

Gold-Plated

Case Width

40mm

Case Thickness

13.9mm

Lug Width

20mm

Crystal

Mineral

Bezel

Bidirectional

Water Resistance

40m

Dial Color

Burgundy

Jewels

19j

Frequency

21,600 bph

Power Reserve

44 hours

Year

1989

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