Seiko Cal. 3866 - 923

The Seiko 3866-923 represents an important milestone in Seiko's 1982 lineup. Powered by the 3866 caliber with 22j jewels beating at 28,800 bph, it delivers a 43 hours power reserve. [seikata-wm-d6623a32a5a2]

Also known as: Tuna, Sea Horse

Specifications

Movement

Hand-Winding

Case Material

PVD Black

Case Width

35mm

Case Thickness

14.4mm

Lug Width

19mm

Crystal

Hardlex

Bezel

Fixed

Water Resistance

100m

Dial Color

Blue Sunburst

Jewels

22j

Frequency

28,800 bph

Power Reserve

43 hours

Year

1982

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