Seiko Cal. 5640 - 194

The Seiko 5640-194 represents an important milestone in Seiko's 1980 lineup. It features a Black dial protected by a Acrylic crystal and offers 40m of water resistance. [seikata-wm-16d7bc375157]

Also known as: Monster, Flighty

Specifications

Movement

Quartz

Case Material

Stainless Steel

Case Width

43mm

Case Thickness

13.3mm

Lug Width

22mm

Crystal

Acrylic

Bezel

Bidirectional

Water Resistance

40m

Dial Color

Black

Jewels

29j

Frequency

36,000 bph

Power Reserve

65 hours

Year

1980

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