Seiko Cal. 5643 - 980

The Seiko 5643-980 represents an important milestone in Seiko's 1991 lineup. Powered by the 5643 caliber with 36j jewels beating at 28,800 bph, it delivers a 63 hours power reserve. [seikata-wm-19d054cdede3]

Also known as: Crown, Flighty

Specifications

Movement

Spring Drive

Case Material

PVD Black

Case Width

45mm

Case Thickness

10.2mm

Lug Width

18mm

Crystal

Mineral

Bezel

Bidirectional

Water Resistance

80m

Dial Color

Burgundy

Jewels

36j

Frequency

28,800 bph

Power Reserve

63 hours

Year

1991

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