Seiko Cal. 0731 - 691

Seiko 0731-691

The 0731-691 is a sought-after Solar piece from Seiko's golden era. Powered by the 0731 caliber with 32j jewels beating at 21,600 bph, it delivers a 42 hours power reserve. [seikata-wm-fbe2ed396b78]

Also known as: Shogun, Crown

Specifications

Movement
Solar
Case Material
Stainless Steel
Case Width
46mm
Case Thickness
14.3mm
Lug Width
20mm
Crystal
Mineral
Bezel
Inner Rotating
Water Resistance
130m
Dial Color
Blue Sunburst
Jewels
32j
Frequency
21,600 bph
Power Reserve
42 hours
Year
1998

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