Seiko Cal. 5641 - 284

Released in 1980, the Cal. 5641 with design code 284 was part of Seiko's domestic market collection. With its 18mm lug width and 12.8mm profile, it sits comfortably on most wrists. [seikata-wm-46c070bc73ae]

Also known as: Sportsmatic

Specifications

Movement

Spring Drive

Case Material

PVD Black

Case Width

34mm

Case Thickness

12.8mm

Lug Width

18mm

Crystal

Sapphire

Bezel

Fixed

Water Resistance

120m

Dial Color

Burgundy

Jewels

34j

Frequency

36,000 bph

Power Reserve

72 hours

Year

1980

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