Seiko Cal. 4431 - 170

Seiko 4431-170

This Spring Drive model from 1985 features a 37mm Hardlex-Coated Steel case. The Bidirectional bezel and 37mm case give it a distinctive presence on the wrist. [seikata-wm-1b1179406ed8]

Also known as: Arnie, Flighty

Specifications

Movement
Spring Drive
Case Material
Hardlex-Coated Steel
Case Width
37mm
Case Thickness
9.1mm
Lug Width
20mm
Crystal
Sapphire
Bezel
Bidirectional
Water Resistance
70m
Dial Color
Black
Jewels
30j
Frequency
36,000 bph
Power Reserve
68 hours
Year
1985

Related Models

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