Seiko Cal. 6631 - 358

Seiko 6631-358

This Automatic model from 1966 features a 42mm Hardlex-Coated Steel case. With its 19mm lug width and 11.9mm profile, it sits comfortably on most wrists. [seikata-wm-adde6076ba1a]

Specifications

Movement
Automatic
Case Material
Hardlex-Coated Steel
Case Width
42mm
Case Thickness
11.9mm
Lug Width
19mm
Crystal
Hardlex
Bezel
Bidirectional
Water Resistance
110m
Dial Color
Champagne
Jewels
29j
Frequency
28,800 bph
Power Reserve
39 hours
Year
1966

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