Seiko Cal. 5691 - 678

The Seiko 5691-678 represents an important milestone in Seiko's 1980 lineup. With its 22mm lug width and 15.8mm profile, it sits comfortably on most wrists. [seikata-wm-b3bae3e6ca5c]

Also known as: Sumo, Goldfeather

Specifications

Movement

Solar

Case Material

PVD Black

Case Width

38mm

Case Thickness

15.8mm

Lug Width

22mm

Crystal

Mineral

Bezel

Inner Rotating

Water Resistance

50m

Dial Color

Black

Jewels

23j

Frequency

28,800 bph

Power Reserve

36 hours

Year

1980

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