Seiko Cal. 6640 - 779

Seiko 6640-779

This Automatic model from 1970 features a 44mm Titanium case. With its 18mm lug width and 13.3mm profile, it sits comfortably on most wrists. [seikata-wm-ba0a498ca7d7]

Specifications

Movement
Automatic
Case Material
Titanium
Case Width
44mm
Case Thickness
13.3mm
Lug Width
18mm
Crystal
Hardlex
Bezel
Bidirectional
Water Resistance
190m
Dial Color
Black
Jewels
20j
Frequency
28,800 bph
Power Reserve
39 hours
Year
1970

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seikata-wm-ba0a498ca7d7