Seiko Cal. 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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