Seiko Cal. 6638 - 938

Released in 1989, the Cal. 6638 with design code 938 was part of Seiko's domestic market collection. With its 19mm lug width and 11.4mm profile, it sits comfortably on most wrists. [seikata-wm-522ff1de5b91]

Also known as: Shogun, Navigator

Specifications

Movement

Spring Drive

Case Material

Stainless Steel

Case Width

46mm

Case Thickness

11.4mm

Lug Width

19mm

Crystal

Hardlex

Bezel

Rotating

Water Resistance

70m

Dial Color

Blue Sunburst

Jewels

23j

Frequency

21,600 bph

Power Reserve

63 hours

Year

1989

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