Seiko Cal. 5642 - 490

The Seiko 5642-490 represents an important milestone in Seiko's 1985 lineup. The Inner Rotating bezel and 41mm case give it a distinctive presence on the wrist. [seikata-wm-9b02a60e4400]

Also known as: Emperor

Specifications

Movement

Spring Drive

Case Material

Titanium

Case Width

41mm

Case Thickness

12.9mm

Lug Width

21mm

Crystal

Acrylic

Bezel

Inner Rotating

Water Resistance

30m

Dial Color

Silver

Jewels

23j

Frequency

21,600 bph

Power Reserve

64 hours

Year

1985

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