Seiko Cal. 5666 - 327

Released in 1975, the Cal. 5666 with design code 327 was part of Seiko's domestic market collection. It features a Black dial protected by a Acrylic crystal and offers 100m of water resistance. [seikata-wm-f608dd8d9ceb]

Also known as: Sumo

Specifications

Movement

Kinetic

Case Material

Titanium

Case Width

44mm

Case Thickness

13.0mm

Lug Width

18mm

Crystal

Acrylic

Bezel

Inner Rotating

Water Resistance

100m

Dial Color

Black

Jewels

28j

Frequency

36,000 bph

Power Reserve

72 hours

Year

1975

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