Seiko Cal. 6640 - 567

Seiko 6640-567

This Automatic model from 1980 features a 45mm Titanium case. With its 20mm lug width and 10.5mm profile, it sits comfortably on most wrists. [seikata-wm-5d88e4c5d36d]

Also known as: World Timer, Golden Tuna

Specifications

Movement
Automatic
Case Material
Titanium
Case Width
45mm
Case Thickness
10.5mm
Lug Width
20mm
Crystal
Hardlex
Bezel
Fixed
Water Resistance
170m
Dial Color
Green
Jewels
34j
Frequency
21,600 bph
Power Reserve
48 hours
Year
1980

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