Seiko Cal. 5642 - 890

The Seiko 5642-890 represents an important milestone in Seiko's 1973 lineup. It features a Blue Sunburst dial protected by a Hardlex crystal and offers 100m of water resistance. [seikata-wm-8b79c6489cb6]

Also known as: Turtle, Arnie

Specifications

Movement

Hand-Winding

Case Material

PVD Black

Case Width

40mm

Case Thickness

10.3mm

Lug Width

21mm

Crystal

Hardlex

Bezel

Inner Rotating

Water Resistance

100m

Dial Color

Blue Sunburst

Jewels

27j

Frequency

36,000 bph

Power Reserve

48 hours

Year

1973

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