Seiko Cal. 4431 - 658

The Seiko 4431-658 represents an important milestone in Seiko's 1986 lineup. Powered by the 4431 caliber with 31j jewels beating at 36,000 bph, it delivers a 60 hours power reserve. [seikata-wm-b90865f24c5e]

Also known as: Arnie

Specifications

Movement

Automatic

Case Material

Two-Tone

Case Width

40mm

Case Thickness

9.7mm

Lug Width

22mm

Crystal

Hardlex

Bezel

Bidirectional

Water Resistance

140m

Dial Color

Blue Sunburst

Jewels

31j

Frequency

36,000 bph

Power Reserve

60 hours

Year

1986

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