Seiko Cal. 6638 - 595

The Seiko 6638-595 represents an important milestone in Seiko's 1966 lineup. With its 22mm lug width and 12.6mm profile, it sits comfortably on most wrists. [seikata-wm-3be72ef490a8]

Also known as: Silverwave, Emperor

Specifications

Movement

Spring Drive

Case Material

Gold-Plated

Case Width

42mm

Case Thickness

12.6mm

Lug Width

22mm

Crystal

Mineral

Bezel

Bidirectional

Water Resistance

160m

Dial Color

Navy

Jewels

18j

Frequency

28,800 bph

Power Reserve

55 hours

Year

1966

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