Seiko Cal. 5631 - 754

Seiko 5631-754

The 5631-754 is a sought-after Solar piece from Seiko's golden era. Powered by the 5631 caliber with 22j jewels beating at 21,600 bph, it delivers a 45 hours power reserve. [seikata-wm-fdb1edfcb37d]

Also known as: Samurai, Arnie

Specifications

Movement
Solar
Case Material
Titanium
Case Width
42mm
Case Thickness
15.2mm
Lug Width
18mm
Crystal
Acrylic
Bezel
Inner Rotating
Water Resistance
140m
Dial Color
Navy
Jewels
22j
Frequency
21,600 bph
Power Reserve
45 hours
Year
1976

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