Seiko Cal. 5641 - 590

This Spring Drive model from 1984 features a 38mm Two-Tone case. With its 20mm lug width and 12.6mm profile, it sits comfortably on most wrists. [seikata-wm-898b8e2883c6]

Also known as: Sportsmatic, Sea Horse

Specifications

Movement

Spring Drive

Case Material

Two-Tone

Case Width

38mm

Case Thickness

12.6mm

Lug Width

20mm

Crystal

Acrylic

Bezel

Fixed

Water Resistance

50m

Dial Color

Blue Sunburst

Jewels

35j

Frequency

28,800 bph

Power Reserve

41 hours

Year

1984

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