Seiko Cal. 6631 - 567

Seiko 6631-567

This Quartz model from 1968 features a 36mm Gold-Plated case. With its 22mm lug width and 10.8mm profile, it sits comfortably on most wrists. [seikata-wm-fdc7750d5ea6]

Also known as: Samurai, Helmet

Specifications

Movement
Quartz
Case Material
Gold-Plated
Case Width
36mm
Case Thickness
10.8mm
Lug Width
22mm
Crystal
Mineral
Bezel
Bidirectional
Water Resistance
190m
Dial Color
Burgundy
Jewels
22j
Frequency
21,600 bph
Power Reserve
70 hours
Year
1968

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