Seiko Cal. 6631 - 909

Seiko 6631-909

The 6631-909 is a sought-after Automatic piece from Seiko's golden era. With its 20mm lug width and 8.2mm profile, it sits comfortably on most wrists. [seikata-wm-0f82a3b9659d]

Also known as: Shogun, Silverwave

Specifications

Movement
Automatic
Case Material
Titanium
Case Width
46mm
Case Thickness
8.2mm
Lug Width
20mm
Crystal
Hardlex
Bezel
Bidirectional
Water Resistance
70m
Dial Color
Black
Jewels
30j
Frequency
21,600 bph
Power Reserve
64 hours
Year
1971

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