Seiko Cal. 6635 - 939

Seiko 6635-939

The 6635-939 is a sought-after Automatic piece from Seiko's golden era. With its 20mm lug width and 13.1mm profile, it sits comfortably on most wrists. [seikata-wm-bec928026300]

Also known as: Crown

Specifications

Movement
Automatic
Case Material
Gold-Plated
Case Width
36mm
Case Thickness
13.1mm
Lug Width
20mm
Crystal
Hardlex
Bezel
Fixed
Water Resistance
180m
Dial Color
Blue Sunburst
Jewels
33j
Frequency
21,600 bph
Power Reserve
72 hours
Year
1973

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seikata-wm-bec928026300