Seiko Cal. 6635 - 430

Seiko 6635-430

This Quartz model from 1966 features a 43mm PVD Black case. With its 21mm lug width and 12.1mm profile, it sits comfortably on most wrists. [seikata-wm-e0ec772e8a23]

Also known as: Sumo, Baby Tuna

Specifications

Movement
Quartz
Case Material
PVD Black
Case Width
43mm
Case Thickness
12.1mm
Lug Width
21mm
Crystal
Mineral
Bezel
Bidirectional
Water Resistance
60m
Dial Color
Cream
Jewels
30j
Frequency
21,600 bph
Power Reserve
67 hours
Year
1966

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