Seiko Cal. 6638 - 788

The Seiko 6638-788 represents an important milestone in Seiko's 1983 lineup. With its 22mm lug width and 11.3mm profile, it sits comfortably on most wrists. [seikata-wm-b70199ec957f]

Also known as: Pogue, Sportsmatic

Specifications

Movement

Automatic

Case Material

Hardlex-Coated Steel

Case Width

38mm

Case Thickness

11.3mm

Lug Width

22mm

Crystal

Sapphire

Bezel

Bidirectional

Water Resistance

140m

Dial Color

Cream

Jewels

27j

Frequency

21,600 bph

Power Reserve

45 hours

Year

1983

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