Seiko Cal. 6640 - 590

Seiko 6640-590

This Quartz model from 1967 features a 38mm Titanium case. With its 19mm lug width and 13.7mm profile, it sits comfortably on most wrists. [seikata-wm-1f7416cb2485]

Specifications

Movement
Quartz
Case Material
Titanium
Case Width
38mm
Case Thickness
13.7mm
Lug Width
19mm
Crystal
Acrylic
Bezel
Inner Rotating
Water Resistance
50m
Dial Color
Silver
Jewels
32j
Frequency
36,000 bph
Power Reserve
45 hours
Year
1967

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