Seiko Cal. 3820 - 641

The Seiko 3820-641 represents an important milestone in Seiko's 1976 lineup. With its 18mm lug width and 12.5mm profile, it sits comfortably on most wrists. [seikata-wm-0bc518e1da83]

Also known as: Rally, World Timer

Specifications

Movement

Automatic

Case Material

Gold-Plated

Case Width

34mm

Case Thickness

12.5mm

Lug Width

18mm

Crystal

Hardlex

Bezel

Rotating

Water Resistance

50m

Dial Color

Silver

Jewels

23j

Frequency

28,800 bph

Power Reserve

66 hours

Year

1976

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