Seiko Cal. 6638 - 927

The Seiko 6638-927 represents an important milestone in Seiko's 1976 lineup. Powered by the 6638 caliber with 29j jewels beating at 21,600 bph, it delivers a 43 hours power reserve. [seikata-wm-d3bb0f4a9a39]

Also known as: Shogun, Pogue

Specifications

Movement

Solar

Case Material

PVD Black

Case Width

40mm

Case Thickness

10.0mm

Lug Width

20mm

Crystal

Acrylic

Bezel

Fixed

Water Resistance

170m

Dial Color

Green

Jewels

29j

Frequency

21,600 bph

Power Reserve

43 hours

Year

1976

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