Seiko Cal. 4518 - 633

Seiko 4518-633

This Spring Drive model from 1971 features a 38mm PVD Black case. With its 18mm lug width and 13.0mm profile, it sits comfortably on most wrists. [seikata-wm-7bd7a85b157b]

Also known as: Sea Horse

Specifications

Movement
Spring Drive
Case Material
PVD Black
Case Width
38mm
Case Thickness
13.0mm
Lug Width
18mm
Crystal
Sapphire
Bezel
Bidirectional
Water Resistance
120m
Dial Color
Black
Jewels
28j
Frequency
21,600 bph
Power Reserve
47 hours
Year
1971

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