Seiko Cal. 5639 - 638

Seiko 5639-638

This Automatic model from 1972 features a 37mm Titanium case. With its 21mm lug width and 10.3mm profile, it sits comfortably on most wrists. [seikata-wm-70a1930bd969]

Specifications

Movement
Automatic
Case Material
Titanium
Case Width
37mm
Case Thickness
10.3mm
Lug Width
21mm
Crystal
Hardlex
Bezel
Fixed
Water Resistance
80m
Dial Color
Navy
Jewels
18j
Frequency
36,000 bph
Power Reserve
54 hours
Year
1972

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seikata-wm-70a1930bd969