Seiko Cal. 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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