Seiko Cal. 5641 - 143

The Seiko 5641-143 represents an important milestone in Seiko's 1981 lineup. Powered by the 5641 caliber with 20j jewels beating at 21,600 bph, it delivers a 69 hours power reserve. [seikata-wm-e5912da8fb53]

Also known as: UFO

Specifications

Movement

Spring Drive

Case Material

PVD Black

Case Width

45mm

Case Thickness

8.7mm

Lug Width

22mm

Crystal

Acrylic

Bezel

Rotating

Water Resistance

100m

Dial Color

Champagne

Jewels

20j

Frequency

21,600 bph

Power Reserve

69 hours

Year

1981

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