Seiko Cal. 5687 - 637

The 5687-637 is a sought-after Solar piece from Seiko's golden era. Powered by the 5687 caliber with 31j jewels beating at 36,000 bph, it delivers a 68 hours power reserve. [seikata-wm-e592b6672b42]

Also known as: Shogun

Specifications

Movement

Solar

Case Material

Gold-Plated

Case Width

39mm

Case Thickness

8.8mm

Lug Width

20mm

Crystal

Mineral

Bezel

Fixed

Water Resistance

120m

Dial Color

Silver

Jewels

31j

Frequency

36,000 bph

Power Reserve

68 hours

Year

1980

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