Seiko Cal. 6388 - 998

The Seiko 6388-998 represents an important milestone in Seiko's 1979 lineup. With its 22mm lug width and 13.3mm profile, it sits comfortably on most wrists. [seikata-wm-7bc889de40c4]

Also known as: Sumo, Crown

Specifications

Movement

Quartz

Case Material

Stainless Steel

Case Width

42mm

Case Thickness

13.3mm

Lug Width

22mm

Crystal

Mineral

Bezel

Inner Rotating

Water Resistance

30m

Dial Color

White

Jewels

36j

Frequency

21,600 bph

Power Reserve

72 hours

Year

1979

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