Seiko Cal. 6686 - 931

Released in 1968, the Cal. 6686 with design code 931 was part of Seiko's domestic market collection. With its 18mm lug width and 14.3mm profile, it sits comfortably on most wrists. [seikata-wm-ff31ed379ac8]

Also known as: Emperor, Arnie

Specifications

Movement

Automatic

Case Material

Gold-Plated

Case Width

39mm

Case Thickness

14.3mm

Lug Width

18mm

Crystal

Acrylic

Bezel

Inner Rotating

Water Resistance

180m

Dial Color

Green

Jewels

28j

Frequency

21,600 bph

Power Reserve

60 hours

Year

1968

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