Seiko Cal. 5631 - 538

Seiko 5631-538

This Automatic model from 1966 features a 37mm Gold-Plated case. The Coin-Edge bezel and 37mm case give it a distinctive presence on the wrist. [seikata-wm-57c6d85ccefe]

Also known as: Sumo, Arnie

Specifications

Movement
Automatic
Case Material
Gold-Plated
Case Width
37mm
Case Thickness
12.2mm
Lug Width
21mm
Crystal
Mineral
Bezel
Coin-Edge
Water Resistance
160m
Dial Color
Black
Jewels
18j
Frequency
36,000 bph
Power Reserve
44 hours
Year
1966

Related Models

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