Seiko Cal. 6631 - 874

Seiko 6631-874

This Spring Drive model from 1984 features a 46mm Stainless Steel case. The Inner Rotating bezel and 46mm case give it a distinctive presence on the wrist. [seikata-wm-a5104180ae55]

Also known as: Monster, Crown

Specifications

Movement
Spring Drive
Case Material
Stainless Steel
Case Width
46mm
Case Thickness
14.5mm
Lug Width
18mm
Crystal
Mineral
Bezel
Inner Rotating
Water Resistance
180m
Dial Color
White
Jewels
29j
Frequency
21,600 bph
Power Reserve
53 hours
Year
1984

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seikata-wm-a5104180ae55