Seiko Cal. 6639 - 590

Seiko 6639-590

This Hand-Winding model from 1978 features a 38mm Hardlex-Coated Steel case. With its 21mm lug width and 12.7mm profile, it sits comfortably on most wrists. [seikata-wm-f078112de42a]

Also known as: Bellmatic, Arnie

Specifications

Movement
Hand-Winding
Case Material
Hardlex-Coated Steel
Case Width
38mm
Case Thickness
12.7mm
Lug Width
21mm
Crystal
Mineral
Bezel
Fixed
Water Resistance
80m
Dial Color
Cream
Jewels
20j
Frequency
28,800 bph
Power Reserve
72 hours
Year
1978

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