Seiko Cal. 3864 - 627

This Hand-Winding model from 1975 features a 45mm Two-Tone case. Powered by the 3864 caliber with 25j jewels beating at 21,600 bph, it delivers a 47 hours power reserve. [seikata-wm-1717fb19445d]

Also known as: Sea Horse

Specifications

Movement

Hand-Winding

Case Material

Two-Tone

Case Width

45mm

Case Thickness

9.6mm

Lug Width

20mm

Crystal

Acrylic

Bezel

Fixed

Water Resistance

70m

Dial Color

Black

Jewels

25j

Frequency

21,600 bph

Power Reserve

47 hours

Year

1975

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