Seiko Cal. 5658 - 840

The Seiko 5658-840 represents an important milestone in Seiko's 1983 lineup. The Fixed bezel and 41mm case give it a distinctive presence on the wrist. [seikata-wm-900e3f2d7c80]

Also known as: UFO

Specifications

Movement

Kinetic

Case Material

PVD Black

Case Width

41mm

Case Thickness

12.1mm

Lug Width

19mm

Crystal

Acrylic

Bezel

Fixed

Water Resistance

120m

Dial Color

Navy

Jewels

21j

Frequency

36,000 bph

Power Reserve

55 hours

Year

1983

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