Seiko Cal. 5644 - 112

Seiko 5644-112

This Spring Drive model from 1968 features a 46mm Gold-Plated case. The Fixed bezel and 46mm case give it a distinctive presence on the wrist. [seikata-wm-31a951aafab5]

Also known as: Tuna, World Timer

Specifications

Movement
Spring Drive
Case Material
Gold-Plated
Case Width
46mm
Case Thickness
8.6mm
Lug Width
18mm
Crystal
Acrylic
Bezel
Fixed
Water Resistance
100m
Dial Color
Blue Sunburst
Jewels
17j
Frequency
36,000 bph
Power Reserve
72 hours
Year
1968

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seikata-wm-31a951aafab5