Seiko Cal. 3866 - 391

This Hand-Winding model from 1968 features a 37mm Gold-Plated case. With its 18mm lug width and 9.5mm profile, it sits comfortably on most wrists. [seikata-wm-6865f035e6ec]

Also known as: UFO

Specifications

Movement

Hand-Winding

Case Material

Gold-Plated

Case Width

37mm

Case Thickness

9.5mm

Lug Width

18mm

Crystal

Acrylic

Bezel

Fixed

Water Resistance

60m

Dial Color

White

Jewels

26j

Frequency

28,800 bph

Power Reserve

37 hours

Year

1968

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