Seiko Cal. 4431 - 445

The Seiko 4431-445 represents an important milestone in Seiko's 1989 lineup. The Coin-Edge bezel and 36mm case give it a distinctive presence on the wrist. [seikata-wm-d3cdad503b99]

Also known as: Shogun, Bellmatic

Specifications

Movement

Automatic

Case Material

Hardlex-Coated Steel

Case Width

36mm

Case Thickness

13.4mm

Lug Width

18mm

Crystal

Hardlex

Bezel

Coin-Edge

Water Resistance

40m

Dial Color

Navy

Jewels

25j

Frequency

36,000 bph

Power Reserve

69 hours

Year

1989

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