Seiko Cal. 4556 - 238

Seiko 4556-238

This Automatic model from 1965 features a 37mm Titanium case. The Rotating bezel and 37mm case give it a distinctive presence on the wrist. [seikata-wm-9c87aaf6d3a8]

Also known as: Sumo, Bullhead

Specifications

Movement
Automatic
Case Material
Titanium
Case Width
37mm
Case Thickness
14.1mm
Lug Width
18mm
Crystal
Mineral
Bezel
Rotating
Water Resistance
160m
Dial Color
Green
Jewels
33j
Frequency
21,600 bph
Power Reserve
61 hours
Year
1965

Related Models

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