Seiko Cal. 5687 - 642

Released in 1980, the Cal. 5687 with design code 642 was part of Seiko's domestic market collection. With its 22mm lug width and 12.8mm profile, it sits comfortably on most wrists. [seikata-wm-2bea477be21a]

Also known as: Sea Horse, Golden Tuna

Specifications

Movement

Kinetic

Case Material

Hardlex-Coated Steel

Case Width

35mm

Case Thickness

12.8mm

Lug Width

22mm

Crystal

Hardlex

Bezel

Rotating

Water Resistance

100m

Dial Color

Cream

Jewels

18j

Frequency

21,600 bph

Power Reserve

68 hours

Year

1980

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