Seiko Cal. 6638 - 583

The Seiko 6638-583 represents an important milestone in Seiko's 1972 lineup. Powered by the 6638 caliber with 19j jewels beating at 28,800 bph, it delivers a 64 hours power reserve. [seikata-wm-f2d3718ba1c3]

Also known as: Sea Horse

Specifications

Movement

Spring Drive

Case Material

Titanium

Case Width

37mm

Case Thickness

15.5mm

Lug Width

22mm

Crystal

Hardlex

Bezel

Inner Rotating

Water Resistance

190m

Dial Color

Champagne

Jewels

19j

Frequency

28,800 bph

Power Reserve

64 hours

Year

1972

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