Seiko Cal. 3865 - 690

The Seiko 3865-690 represents an important milestone in Seiko's 1981 lineup. With its 18mm lug width and 11.8mm profile, it sits comfortably on most wrists. [seikata-wm-5f2c38634293]

Also known as: Sumo, Sea Horse

Specifications

Movement

Automatic

Case Material

Gold-Plated

Case Width

46mm

Case Thickness

11.8mm

Lug Width

18mm

Crystal

Mineral

Bezel

Bidirectional

Water Resistance

80m

Dial Color

Cream

Jewels

28j

Frequency

28,800 bph

Power Reserve

44 hours

Year

1981

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