Seiko Cal. 5641 - 964

This Hand-Winding model from 1977 features a 34mm PVD Black case. Powered by the 5641 caliber with 36j jewels beating at 28,800 bph, it delivers a 53 hours power reserve. [seikata-wm-f5af3d04677f]

Also known as: Bullhead, Arnie

Specifications

Movement

Hand-Winding

Case Material

PVD Black

Case Width

34mm

Case Thickness

14.1mm

Lug Width

22mm

Crystal

Acrylic

Bezel

Inner Rotating

Water Resistance

80m

Dial Color

Green

Jewels

36j

Frequency

28,800 bph

Power Reserve

53 hours

Year

1977

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