Seiko Cal. 6642 - 831

The Seiko 6642-831 represents an important milestone in Seiko's 1986 lineup. With its 19mm lug width and 10.5mm profile, it sits comfortably on most wrists. [seikata-wm-a5ad553f26f4]

Also known as: Golden Tuna

Specifications

Movement

Quartz

Case Material

Two-Tone

Case Width

46mm

Case Thickness

10.5mm

Lug Width

19mm

Crystal

Hardlex

Bezel

Inner Rotating

Water Resistance

60m

Dial Color

Champagne

Jewels

20j

Frequency

28,800 bph

Power Reserve

42 hours

Year

1986

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