Seiko Cal. 5686 - 674

The Seiko 5686-674 represents an important milestone in Seiko's 1977 lineup. With its 22mm lug width and 15.0mm profile, it sits comfortably on most wrists. [seikata-wm-8800f5808e2f]

Also known as: Sumo, Bullhead

Specifications

Movement

Spring Drive

Case Material

Two-Tone

Case Width

44mm

Case Thickness

15.0mm

Lug Width

22mm

Crystal

Acrylic

Bezel

Fixed

Water Resistance

30m

Dial Color

Blue Sunburst

Jewels

29j

Frequency

28,800 bph

Power Reserve

36 hours

Year

1977

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