Seiko Cal. 5664 - 990

Released in 1986, the Cal. 5664 with design code 990 was part of Seiko's domestic market collection. It features a Black dial protected by a Acrylic crystal and offers 140m of water resistance. [seikata-wm-bd466fa32977]

Also known as: Navigator

Specifications

Movement

Spring Drive

Case Material

Stainless Steel

Case Width

40mm

Case Thickness

11.3mm

Lug Width

18mm

Crystal

Acrylic

Bezel

Rotating

Water Resistance

140m

Dial Color

Black

Jewels

22j

Frequency

21,600 bph

Power Reserve

46 hours

Year

1986

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