Seiko Cal. 6658 - 699

The Seiko 6658-699 represents an important milestone in Seiko's 1981 lineup. With its 21mm lug width and 13.0mm profile, it sits comfortably on most wrists. [seikata-wm-82744d38703e]

Also known as: Sumo

Specifications

Movement

Automatic

Case Material

Stainless Steel

Case Width

42mm

Case Thickness

13.0mm

Lug Width

21mm

Crystal

Hardlex

Bezel

Fixed

Water Resistance

30m

Dial Color

Navy

Jewels

22j

Frequency

36,000 bph

Power Reserve

56 hours

Year

1981

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