Seiko Cal. 5631 - 697

Seiko 5631-697

This Automatic model from 1972 features a 35mm Stainless Steel case. Powered by the 5631 caliber with 25j jewels beating at 36,000 bph, it delivers a 70 hours power reserve. [seikata-wm-ba55d5427198]

Also known as: Monster, Pogue

Specifications

Movement
Automatic
Case Material
Stainless Steel
Case Width
35mm
Case Thickness
14.2mm
Lug Width
22mm
Crystal
Acrylic
Bezel
Fixed
Water Resistance
180m
Dial Color
Navy
Jewels
25j
Frequency
36,000 bph
Power Reserve
70 hours
Year
1972

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seikata-wm-ba55d5427198