Seiko Cal. 3866 - 765

The Seiko 3866-765 represents an important milestone in Seiko's 1975 lineup. The Bidirectional bezel and 37mm case give it a distinctive presence on the wrist. [seikata-wm-5b05c65940ff]

Also known as: Samurai, Emperor

Specifications

Movement

Automatic

Case Material

PVD Black

Case Width

37mm

Case Thickness

14.3mm

Lug Width

21mm

Crystal

Mineral

Bezel

Bidirectional

Water Resistance

70m

Dial Color

Burgundy

Jewels

31j

Frequency

21,600 bph

Power Reserve

44 hours

Year

1975

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