Seiko Cal. 3866 - 899

The Seiko 3866-899 represents an important milestone in Seiko's 1975 lineup. With its 21mm lug width and 12.1mm profile, it sits comfortably on most wrists. [seikata-wm-32798ef1412c]

Also known as: Sumo

Specifications

Movement

Quartz

Case Material

Gold-Plated

Case Width

41mm

Case Thickness

12.1mm

Lug Width

21mm

Crystal

Sapphire

Bezel

Fixed

Water Resistance

140m

Dial Color

White

Jewels

26j

Frequency

36,000 bph

Power Reserve

72 hours

Year

1975

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