Seiko Cal. 3866 - 604

The Seiko 3866-604 represents an important milestone in Seiko's 1980 lineup. Powered by the 3866 caliber with 25j jewels beating at 36,000 bph, it delivers a 69 hours power reserve. [seikata-wm-3f0b77e8763c]

Also known as: Sea Horse

Specifications

Movement

Hand-Winding

Case Material

Two-Tone

Case Width

44mm

Case Thickness

8.1mm

Lug Width

18mm

Crystal

Hardlex

Bezel

Fixed

Water Resistance

200m

Dial Color

Burgundy

Jewels

25j

Frequency

36,000 bph

Power Reserve

69 hours

Year

1980

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