Seiko Cal. 5631 - 567

Seiko 5631-567

This Automatic model from 1978 features a 45mm Titanium case. With its 18mm lug width and 8.4mm profile, it sits comfortably on most wrists. [seikata-wm-e72b9eb64572]

Also known as: Sportsmatic, World Timer

Specifications

Movement
Automatic
Case Material
Titanium
Case Width
45mm
Case Thickness
8.4mm
Lug Width
18mm
Crystal
Acrylic
Bezel
Bidirectional
Water Resistance
90m
Dial Color
Black
Jewels
23j
Frequency
36,000 bph
Power Reserve
63 hours
Year
1978

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seikata-wm-e72b9eb64572