Seiko Cal. 5664 - 931

This Kinetic model from 1978 features a 40mm PVD Black case. It features a Navy dial protected by a Acrylic crystal and offers 180m of water resistance. [seikata-wm-2d3d336be4c2]

Also known as: Helmet, Rally

Specifications

Movement

Kinetic

Case Material

PVD Black

Case Width

40mm

Case Thickness

9.5mm

Lug Width

18mm

Crystal

Acrylic

Bezel

Bidirectional

Water Resistance

180m

Dial Color

Navy

Jewels

36j

Frequency

28,800 bph

Power Reserve

45 hours

Year

1978

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