Seiko Cal. 5631 - 951

Seiko 5631-951

The 5631-951 is a sought-after Automatic piece from Seiko's golden era. Powered by the 5631 caliber with 32j jewels beating at 21,600 bph, it delivers a 56 hours power reserve. [seikata-wm-f2343d634a89]

Also known as: Emperor

Specifications

Movement
Automatic
Case Material
Hardlex-Coated Steel
Case Width
43mm
Case Thickness
15.5mm
Lug Width
20mm
Crystal
Acrylic
Bezel
Bidirectional
Water Resistance
180m
Dial Color
Burgundy
Jewels
32j
Frequency
21,600 bph
Power Reserve
56 hours
Year
1974

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