Seiko Cal. 6388 - 728

The Seiko 6388-728 represents an important milestone in Seiko's 1980 lineup. With its 19mm lug width and 11.9mm profile, it sits comfortably on most wrists. [seikata-wm-442185741711]

Also known as: Sportsmatic, Baby Tuna

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

41mm

Case Thickness

11.9mm

Lug Width

19mm

Crystal

Hardlex

Bezel

Coin-Edge

Water Resistance

60m

Dial Color

White

Jewels

21j

Frequency

36,000 bph

Power Reserve

58 hours

Year

1980

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