Seiko Cal. 3864 - 641

This Hand-Winding model from 1976 features a 40mm PVD Black case. Powered by the 3864 caliber with 34j jewels beating at 36,000 bph, it delivers a 63 hours power reserve. [seikata-wm-1fcdc87cc6a4]

Specifications

Movement

Hand-Winding

Case Material

PVD Black

Case Width

40mm

Case Thickness

10.0mm

Lug Width

21mm

Crystal

Mineral

Bezel

Rotating

Water Resistance

180m

Dial Color

Black

Jewels

34j

Frequency

36,000 bph

Power Reserve

63 hours

Year

1976

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