Seiko Cal. 3866 - 171

This Hand-Winding model from 1972 features a 44mm Two-Tone case. With its 21mm lug width and 14.6mm profile, it sits comfortably on most wrists. [seikata-wm-054325412d3c]

Also known as: Sumo, Silverwave

Specifications

Movement

Hand-Winding

Case Material

Two-Tone

Case Width

44mm

Case Thickness

14.6mm

Lug Width

21mm

Crystal

Acrylic

Bezel

Rotating

Water Resistance

90m

Dial Color

Black

Jewels

21j

Frequency

28,800 bph

Power Reserve

62 hours

Year

1972

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