Seiko Cal. 6646 - 764

The Seiko 6646-764 represents an important milestone in Seiko's 1986 lineup. With its 21mm lug width and 13.4mm profile, it sits comfortably on most wrists. [seikata-wm-87805b52d03e]

Also known as: Golden Tuna

Specifications

Movement

Quartz

Case Material

Titanium

Case Width

38mm

Case Thickness

13.4mm

Lug Width

21mm

Crystal

Hardlex

Bezel

Inner Rotating

Water Resistance

120m

Dial Color

Champagne

Jewels

19j

Frequency

36,000 bph

Power Reserve

55 hours

Year

1986

Related Models

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• Seiko 4551-446
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